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Medical Dictionary


processor (pra′ses-sor)
A device that converts one form of energy into another form of energy or one form of material into another form of material. speech p. the part of a cochlear implant that converts speech into electrical impulses that are used to stimulate the neurons of the auditory division of the eighth cranial nerve.

processus, pl .processus (pro-ses′us) [TA]
SYN: process (1) . [L. see process] p. accessorius vertebrae lumbalis [TA] SYN: accessory process of lumbar vertebra. p. alveolaris maxillae SYN: alveolar process of maxilla. SEE ALSO: alveolar bone (2) . p. anterior mallei [TA] SYN: anterior process of malleus. p. articularis [TA] SYN: articular process. p. articularis superior ossis sacri [TA] SYN: superior articular process of sacrum. p. ascendens an upward extension of the embryonic pterygoquadrate cartilage; it develops into the greater wing of the sphenoid bone. SYN: ascending process. p. brevis SYN: lateral process of malleus. p. calcaneus ossis cuboidei [TA] SYN: calcaneal process of cuboid. p. caudatus [TA] SYN: caudate process. p. ciliaris [TA] SYN: ciliary process. p. clinoideus [TA] SYN: clinoid process. p. clinoideus anterior [TA] SYN: anterior clinoid process. p. clinoideus medius [TA] SYN: middle clinoid process. p. clinoideus posterior [TA] SYN: posterior clinoid process. p. cochleariformis [TA] a bony angular process (the termination of the septum of the pharyngotympanic (auditory) tube) above the anterior end of the vestibular window, forming a pulley over which the tendon of the tensor tympani muscle plays. SYN: cochleariform process, p. trochleariformis. p. condylaris mandibulae [TA] SYN: condylar process of mandible. p. coracoideus [TA] SYN: coracoid process. p. coronoideus SYN: coronoid process. p. coronoideus mandibulae [TA] SYN: coronoid process of the mandible. p. coronoideus ulnae [TA] SYN: coronoid process of the ulna. p. costalis [TA] SYN: costal process. p. ethmoidalis conchae nasalis inferioris [TA] SYN: ethmoidal process of inferior nasal concha. p. falciformis ligamenti sacrotuberalis [TA] SYN: falciform process of sacrotuberous ligament. p. ferreini SYN: medullary ray. p. frontalis maxillae [TA] SYN: frontal process of maxilla. p. frontalis ossis zygomatici [TA] SYN: frontal process of zygomatic bone. p. gracilis SYN: anterior process of malleus. p. intrajugularis [TA] SYN: intrajugular process. p. jugularis ossis occipitalis [TA] SYN: jugular process of occipital bone. p. lacrimalis conchae nasalis inferioris [TA] SYN: lacrimal process of inferior nasal concha. p. lateralis mallei [TA] SYN: lateral process of malleus. p. lateralis tali [TA] SYN: lateral process of talus. p. lateralis tuberis calcanei [TA] SYN: lateral process of calcaneal tuberosity. p. lenticularis incudis [TA] SYN: lenticular process of incus. p. mammillaris vertebrae lumbalis [TA] SYN: mammillary process of lumbar vertebra. p. mastoideus [TA] SYN: mastoid process. p. mastoideus partis petrosae ossis temporalis [TA] SYN: mastoid process of petrous part of temporal bone. p. maxillaris conchae nasalis inferioris [TA] SYN: maxillary process of inferior nasal concha. p. medialis tuberis calcanei [TA] SYN: medial process of calcaneal tuberosity. p. muscularis cartilaginis arytenoideae [TA] SYN: muscular process of arytenoid cartilage. p. orbitalis ossis palatini [TA] SYN: orbital process of palatine bone. p. palatinus ossis maxillae [TA] SYN: palatine process of maxilla. p. papillaris lobi caudati hepatis [TA] SYN: papillary process of caudate lobe of liver. p. paramastoideus [TA] SYN: paramastoid process. p. posterior cartilaginis septi nasi [TA] SYN: posterior process of septal cartilage. p. posterior tali [TA] SYN: posterior process of talus. p. pterygoideus ossis sphenoidalis [TA] SYN: pterygoid process of sphenoid bone. p. pterygospinosus [TA] SYN: pterygospinous process. p. pyramidalis ossis palatini [TA] SYN: pyramidal process of palatine bone. p. ravii SYN: anterior process of malleus. p. retromandibularis SYN: deep part of parotid gland. p. retromandibularis glandulae parotidis SYN: deep part of parotid gland. p. sphenoidalis cartilaginis septi nasi posterior process of septal cartilage. p. sphenoidalis ossis palatini [TA] SYN: sphenoidal process of palatine bone. p. spinosus [TA] SYN: spine of sphenoid bone. p. spinosus vertebrae [TA] SYN: spinous process of vertebra. p. styloideus ossis metacarpalis III [TA] SYN: styloid process of third metacarpal bone. p. styloideus ossis temporalis [TA] SYN: styloid process of temporal bone. p. styloideus radii [TA] SYN: styloid process of radius. p. styloideus ulnae [TA] SYN: styloid process of ulna. p. supraepicondylaris humeri [TA] SYN: supracondylar process of humerus. p. temporalis ossis zygomatici [TA] SYN: temporal process of zygomatic bone. p. transversus vertebrae [TA] SYN: transverse process of vertebra. p. trochleariformis SYN: p. cochleariformis. p. trochlearis SYN: fibular trochlea of calcaneus. p. uncinatus ossis ethmoidalis [TA] SYN: uncinate process of ethmoid bone. p. uncinatus pancreatis [TA] SYN: uncinate process of pancreas. p. uncinatus vertebrae cervicalis [TA] SYN: uncinate process of cervical vertebra. p. uncinatus vertebrae thoracicae primae [TA] SYN: uncinate process of first thoracic vertebra. p. vaginalis ossis sphenoidalis [TA] SYN: vaginal process of sphenoid bone. p. vaginalis peritonei SYN: p. vaginalis of peritoneum. p. vaginalis of peritoneum a peritoneal diverticulum in the embryonic lower anterior abdominal wall that traverses the inguinal canal; in the male it forms the tunica vaginalis testis and normally loses its connection with the peritoneal cavity; a persistent p. vaginalis in the female is known as the canal of Nuck. SYN: Nuck diverticulum, p. vaginalis peritonei, vaginal process of peritoneum, vaginal process of testis. p. vermiformis SYN: appendix (2) . p. vocalis cartilaginis arytenoideae [TA] SYN: vocal process of arytenoid cartilage. p. xiphoideus [TA] SYN: xiphoid process. p. zygomaticus maxillae [TA] SYN: zygomatic process of maxilla. p. zygomaticus ossis frontalis [TA] SYN: zygomatic process of frontal bone. p. zygomaticus ossis temporalis [TA] SYN: zygomatic process of temporal bone.

procheilia, prochilia (pro-ki′le-a)
Protruding lips. [pro- + G. cheilos, lip]

procheilon, prochilon (pro-ki′lon)
SYN: tubercle of upper lip.

prochiral (pro-ki′ral)
Refers to an atom in a molecule (usually a carbon atom) that would become chiral if one of two identical substituents is replaced by a new ligand; I.E., an atom that has two enantiotopic groups linked to it. For example, carbon-1 of ethanol is a p. carbon.

prochirality (pro-ki-ral′i-te)
The property of being prochiral.

prochlorperazine (pro-klor-per′a-zen)
A phenothiazine compound similar in structure, actions, and uses to chlorpromazine; used as a tranquilizer and antiemetic; available as the edisylate for oral and intramuscular administration and as the maleate for oral administration.

prochondral (pro-kon′dral)
Denoting a developmental stage prior to the formation of cartilage. [pro- + G. chondros, cartilage]

prochordal (pro-kor′dal)
Located cephalic to the notochord. SYN: prechordal.

prochymosin (pro-ki′mo-sin)
The precursor of chymosin. SYN: chymosinogen, pexinogen, prorennin, renninogen, rennogen.

procidentia (pros-i-den′she-a, pro′si-)
A sinking down or prolapse of any organ or part; usually related to prolapse of the uterus. [L. a falling forward, fr. procido, to fall forward] p. uteri prolapse of the uterus.

procollagen (pro-kol′a-jen)
Soluble precursor of collagen formed by fibroblasts and other cells in the process of collagen synthesis; unstable type III p. is associated with Ehlers-Danlos syndrome type IV. p. aminoproteinase an extracellular enzyme that participates in the processing of collagen, removing the extension peptide at the amino-terminal end of p.. p. carboxyproteinase an extracellular enzyme that participates in the processing of collagen, removing the extension peptide at the carboxy-terminal end of p..

proconvertin (pro-kon-ver′tin)
SYN: factor VII.

procreate (pro′kre-at)
To beget; to produce by the sexual act; said usually of the male parent. [L. pro-creo, pp. -creatus, to beget]

procreation (pro-kre-a′shun)
SYN: reproduction (1) .

procreative (pro′kre-a-tiv)
Having the power to beget or procreate.

See procto-.

proctalgia (prok-tal′je-a)
Pain at the anus, or in the rectum. SYN: proctodynia, rectalgia. [proct- + G. algos, pain] p. fugax painful spasm of the muscle about the anus without known cause; probably a neurosis. SYN: anorectal spasm.

proctatresia (prok-ta-tre′ze-a)
SYN: anal atresia. [proct- + G. a- priv. + tresis, a boring]

proctectasia (prok′tek-ta′ze-a)
Obsolete term for dilation of the anus or rectum. [proct- + G. ektasis, extension]

proctectomy (prok-tek′to-me)
Surgical resection of the rectum. SYN: rectectomy. [proct- + G. ektome, excision]

proctitis (prok-ti′tis)
Inflammation of the mucous membrane of the rectum. SYN: rectitis. [proct- + G. -itis, inflammation] chronic ulcerative p. SYN: idiopathic p.. epidemic gangrenous p. a generally fatal disease affecting chiefly children in the tropics, characterized by gangrenous ulceration of the rectum and anus, accompanied by frequent watery stools and tenesmus. SYN: bicho, caribi, Indian sickness. idiopathic p. probably a variant of ulcerative colitis involving the rectum; some cases progress to involve the remainder of the colon as well. SYN: chronic ulcerative p..

procto-, proct-
Anus; (more frequently) rectum; Cf.:recto-. [G. proktos]

proctocele (prok′to-sel)
Prolapse or herniation of the rectum. SYN: rectocele. [procto- + G. kele, tumor]

proctoclysis (prok-tok′li-sis)
Slow continuous administration of saline solution by instillation into the rectum and sigmoid colon. SYN: Murphy drip, rectoclysis. [procto- + G. klysis, a washing out]

proctococcypexy (prok-to-kok′si-pek-se)
Suture of a prolapsing rectum to the tissues anterior to the coccyx. SYN: rectococcypexy. [procto- + G. kokkyx, coccyx, + pexis, fixation]

proctocolectomy (prok′to-ko-lek′to-me)
Surgical removal of the rectum together with part or all of the colon. [procto- + G. kolon, colon, + ektome, excision]

proctocolitis (prok′to-ko-li′tis)
SYN: coloproctitis.

proctocolonoscopy (prok′to-ko′lo-nos′ko-pe)
Inspection of interior of rectum and colon. [procto- + G. kolon, colon, + skopeo, to view]

proctocolpoplasty (prok′to-kol′po-plas-te)
Surgical closure of a rectovaginal fistula. [procto- + G. kolpos, bosom (vagina), + plastos, formed]

proctocystocele (prok′to-sis′to-sel)
Herniation of the bladder into the rectum. [procto- + G. kystis, bladder, + kele, hernia]

proctocystoplasty (prok′to-sis′to-plas-te)
Surgical closure of a rectovesical fistula. [procto- + G. kystis, bladder, + plastos, formed]

proctocystotomy (prok′to-sis-tot′o-me)
Incision into the bladder from the rectum. [procto- + G. kystis, bladder, + tome, incision]

proctodeal (prok′to-de-al)
Relating to the proctodeum.

proctodeum, pl .proctodea (prok-to-de′um, -de′a)
1. An ectodermally lined depression under the root of the tail, adjacent to the terminal part of the embryonic hindgut; at its bottom, proctodeal ectoderm and cloacal endoderm form the cloacal plate. When this epithelial plate ruptures, the anal and urogenital external orifices are established. SYN: anal pit. 2. Terminal portion of the insect alimentary canal, extending from the pylorus (area of malpighian tubule attachment) to the anal opening; in certain diptera (flies) and other insects, the p. is divided into a tubular anterior intestine and an enlarged posterior intestine, or rectum, ending at the anus. [L. fr. G. proktos, anus + hodaios, on the way, fr. hodos, a way]

proctodynia (prok′to-din′e-a)
SYN: proctalgia. [procto- + G. odyne, pain]

proctologic (prok-to-loj′ik)
Relating to proctology.

proctologist (prok-tol′o-jist)
A specialist in proctology.

proctology (prok-tol′o-je)
Surgical specialty concerned with the anus and rectum and their diseases. [procto- + G. logos, study]

proctoparalysis (prok′to-pa-ral′i-sis)
Paralysis of the anus, leading to incontinence of feces.

proctoperineoplasty (prok′to-per-i-ne′o-plas-te)
Plastic surgery of the anus and perineum. SYN: rectoperineorrhaphy. [procto- + perineum, + G. plastos, formed]

proctopexy (prok′to-pek-se)
Surgical fixation of a prolapsing rectum. SYN: rectopexy. [procto- + G. pexis, fixation]

proctophobia (prok-to-fo′be-a)
A morbid fear of rectal disease. SYN: rectophobia. [procto- + G. phobos, fear]

proctoplasty (prok′to-plas-te)
Plastic surgery of the anus or rectum. SYN: rectoplasty. [procto- + G. plastos, formed]

proctoplegia (prok′to-ple′je-a)
Paralysis of the anus and rectum occurring with paraplegia. [procto- + G. plege, stroke]

proctopolypus (prok-to-pol′i-pus)
Polypus of the rectum.

proctoptosia, proctoptosis (prok-top-to′se-a, -to′sis)
Prolapse of the rectum and anus. [procto- + G. ptosis, a falling]

proctorrhagia (proc-to-ra′je-a)
State characterized by having a bloody discharge from the anus. [procto- + G. rhegnymi, to burst forth]

proctorrhaphy (prok-tor′a-fe)
Repair by suture of a lacerated rectum or anus. SYN: rectorrhaphy. [procto- + G. rhaphe, suture]

proctorrhea (prok-to-re′a)
A mucoserous discharge from the rectum. [procto- + G. rhoia, a flow]

proctoscope (prok′to-skop)
A rectal speculum. SYN: rectoscope. [procto- + G. skopeo, to view] Tuttle p. a tubular rectal speculum illuminated at its distal extremity; after introduction, the obturator is withdrawn and a glass window is inserted in the proximal end; then, by means of a rubber bulb and tube connected with the p., the rectal ampulla may be inflated.

proctoscopy (prok-tos′ko-pe)
Visual examination of the rectum and anus, as with a proctoscope. SYN: rectoscopy.

proctosigmoid (prok′to-sig′moyd)
The area of the anal canal and sigmoid colon, usually used to describe the region visualized by sigmoidoscopy.

proctosigmoidectomy (prok′to-sig-moy-dek′to-me)
Excision of the rectum and sigmoid colon. [procto- + sigmoid, + G. ektome, excision]

proctosigmoiditis (prok′to-sig-moy-di′tis)
Inflammation of the sigmoid colon and rectum. [procto- + sigmoid + G. -itis, inflammation]

proctosigmoidoscope (prok′-to-sig-moid′o-skop)
Instrument used for examination of the sigmoid colon and rectum.

proctosigmoidoscopy (prok′to-sig-moy-dos′ko-pe)
Direct inspection through a sigmoidoscope of the rectum and sigmoid colon. [procto- + sigmoid + G. skopeo, to view]

proctospasm (prok′to-spazm)
1. Spasmodic contraction of the anus. 2. Spasmodic contraction of the rectum. [procto- + G. spasmos, spasm]

proctostasis (prok-tos′ta-sis)
Constipation with stasis in the rectum. [procto- + G. stasis, a standing]

proctostat (prok′to-stat)
A tube containing radium for insertion through the anus in the treatment of rectal cancer; obsolete. [procto- + G. statos, standing]


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