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Medical Dictionary


posthemorrhagic (post-hem-o-raj′ik)
Following a hemorrhage.

posthepatic (post-he-pat′ik)
Behind the liver.

posthetomy (pos-thet′o-me)
Dorsal slit of foreskin. [G. posthe, prepuce, + tome, incision]

posthioplasty (pos′the-o-plas-te)
Surgical reconstruction of the prepuce. [G. posthion, dim. form of posthe, prepuce, + plastos, formed]

posthitis (pos-thi′tis)
Inflammation of the prepuce. [G. posthe, prepuce, + -itis, inflammation]

postholith (pos′tho-lith)
SYN: preputial calculus. [G. posthe, prepuce, + lithos, stone]

posthyoid (post-hi′oyd)
Behind the hyoid bone.

posthypnotic (post-hip-not′ik)
Following hypnotism; denoting an act suggested during hypnosis that is to be carried out at some time after the hypnotized subject is awakened.

postictal (post-ik′tal)
Following a seizure, e.g., epileptic.

posticus (pos-ti′kus)
SYN: posterior (2) . [L. fr. post, after]

postinfluenzal (post′in-floo-en′zal)
Occurring as a sequel to influenza.

postischial (post-is′ke-al)
Posterior to the ischium.

postmalarial (post-ma-lar′e-al)
Occurring as a sequel to malaria.

postmastoid (post′mas′toyd)
Posterior to the mastoid process.

postmature (post-ma-toor′, ma-tur′)
Referring to a fetus that remains in the uterus longer than the normal gestational period; i.e., longer than 42 weeks (288 days) in humans.

postmedian (post′me′de-an)
Posterior to the median plane.

postmediastinal (post′me′de-as′ti-nal, -me′de-a-sti′nal)
1. Posterior to the mediastinum. 2. Relating to the posterior mediastinum.

postmediastinum (post′me′de-a-sti′num)
SYN: posterior mediastinum.

postmenopausal (post-men-o-paw′sal)
Relating to the period following the menopause.

postminimus (post-min′i-mus)
A small accessory appendage attached to the side of the fifth finger or toe; it may resemble a normal digit or be merely a fleshy mass. [post- + L. minimus, smallest (finger)]

postmortem (post-mor′tem)
1. Pertaining to or occurring during the period after death. 2. Colloquialism for autopsy (1). [post- + L. acc. case of mors (mort-), death]

postnarial (post′na′re-al)
Relating to the posterior nares or choanae.

postnaris (post′na′ris)
SYN: choanae.

postnasal (post′na′sal)
1. Posterior to the nasal cavity. 2. Relating to the posterior portion of the nasal cavity.

postnatal (post-na′tal)
Occurring after birth. [L. natus, birth]

postnecrotic (post-ne-krot′ik)
Subsequent to the death of a tissue or part of the body.

postneuritic (post-noo-rit′ik)
Following neuritis.

postocular (post′ok′u-lar)
Posterior to the eyeball. [L. oculus, eye]

postoperative (post-op′er-a-tiv)
Following an operation.

postoral (pos-to′ral)
In the posterior part of, or posterior to, the mouth. [L. os (or-), mouth]

postorbital (post′or′bi-tal)
Posterior to the orbit.

postpalatine (post′pal′a-tin)
Posterior to the palatine bones. Usually used to refer to the soft palate.

postparalytic (post′par-a-lit′ik)
Following or consequent upon paralysis.

postpartum (post-par′tum)
After childbirth. Cf.:antepartum, intrapartum. [L. partus, birth (noun), fr. pario, pp. partus, to bring forth]

postpharyngeal (post′fa-rin′je-al)
Posterior to the pharynx.

postpneumonic (post-noo-mon′ik)
Following or occurring as a sequel to pneumonia.

postprandial (post-pran′de-al)
Following a meal. [L. prandium, breakfast]

postpuberal, postpubertal (post-poo′ber-al, -ber-tal)
SYN: postpubescent.

postpuberty (post-poo′ber-te)
The period after puberty.

postpubescent (post-poo-bes′ent)
Subsequent to the period of puberty. SYN: postpuberal, postpubertal.

postpyknotic (post-pik-not′ik)
Following the stage of pyknosis in a red cell, denoting the disappearance of the nucleus (chromatolysis).

postrolandic (pos′tro-lan′dik)
Behind the fissure of Rolando, or central sulcus. See postcentral.

postsacral (post′sa′kral)
Referring to the coccyx.

postscapular (post-skap′u-lar)
Posterior to the scapula.

postscarlatinal (post′skar-la-te′nal)
Occurring as a sequel to scarlatina.

postsphygmic (post-sfig′mik)
Occurring after the pulse wave. [G. sphygmos, pulse]

postsplenic (post′splen′ik)
Posterior to the spleen.

postsynaptic (post-si-nap′tik)
Pertaining to the area on the distal side of a synaptic cleft.

posttarsal (post′tar′sal)
Relating to the posterior portion of the tarsus.

posttecta (post′tek′ta)
Aboral to the hidden part of the duodenum.

posttibial (post′tib′e-al)
Posterior to the tibia; situated in the posterior portion of the leg.

posttranscriptional (post-tran-skrip′shun-al)
Referring to events that occur after transcription.

posttranslational (post-trans-la′shun-al)
Referring to events that occur after translation.

posttransverse (post-tranz′vers)
Behind a transverse process.

posttraumatic (post-traw-mat′ik)
Occurring after trauma and, by implication, caused by it.

posttrematic (post-tre-mat′ik)
Relating to the caudal surface of a branchial cleft. [post- + G. trema, perforation]

posttussis (post-tus′is)
After coughing; referring usually to certain auscultatory sounds. [L. tussis, cough]

posttyphoid (post-ti′foyd)
Occurring as a sequel of typhoid fever.

postulate (pos′tu-lat)
A proposition that is taken as self-evident or assumed without proof as a basis for further analysis. SEE ALSO: hypothesis, theory. [L. postulo, pp. -atus, to demand] Ampère p. SYN: Avogadro law. Avogadro p. SYN: Avogadro law. Ehrlich p. SYN: side-chain theory. Koch postulates to establish the specificity of a pathogenic microorganism, it must be present in all cases of the disease, inoculations of its pure cultures must produce disease in animals, and from these it must be again obtained and be propagated in pure cultures. SYN: Koch law.

postural (pos′tu-ral, pos′cher-al)
Relating to or affected by posture.

posture (pos′choor, pos′cher)
The position of the limbs or the carriage of the body as a whole. [L. positura, fr. pono, pp. positus, to place] Stern p. a supine position with the head extended and lowered over the end of the table, by which the murmur is developed or made more distinct in cases of tricuspid insufficiency.

posturography (pos-tyur-og′ra-fe)
SYN: dynamic p.. [posture + G. grapho, to write] dynamic p. a measurement of postural stability under varying visual and proprioceptive inputs. SYN: p..

postuterine (post-u′ter-in)
Posterior to the uterus.

postvaccinal (post-vak′si-nal)
After vaccination.

postvalvar, postvalvular (post-val′var, -val′vu-lar)
Relating to a position distal to the pulmonary or aortic valves.

potable (po′ta-bl)
Drinkable; fit to drink. [L. potabilis, fr. poto, to drink]

Pierre C.E., French physician, 1825–1901. See P. sign.

potamophobia (pot′a-mo-fo′be-a)
Morbid fears aroused by the sight, and sometimes thought, of a river or any flow of water. [G. potamos, river, + phobos, fear]

Impure potassium carbonate. SYN: pearl-ash. [E. pot-ashes] caustic p. SYN: potassium hydroxide. sulfurated p. a mixture composed chiefly of potassium polysulfides and potassium thiosulfate; used externally in scabies, acne, and psoriasis; used in the manufacture of “white lotion.” SYN: liver of sulfur.

potassic (po-tas′ik)
Relating to or containing potassium.

potassium (K) (po-tas′e-um)
An alkaline metallic element, atomic no. 19, atomic wt. 39.0983, occurring abundantly in nature but always in combination; its salts are used medicinally. For organic p. salts not listed below, see the name of the anion. SYN: kalium. [Mod. L., fr. Eng. potash (fr. pot + ashes) + -ium] p. acetate a diuretic, diaphoretic, and systemic and urinary alkalizer. SYN: sal diureticum. p. acid tartrate SYN: p. bitartrate. p. alum SYN: aluminum p. sulfate. p. aminosalicylate p-aminosalicylic acid. p. antimonyltartrate SYN: antimony p. tartrate. p. atractylate the p. salt of atractylic acid, the natural source of the latter. p. bicarbonate used as a diuretic to decrease the acidity of the urine and as an electrolyte replenisher. p. bitartrate a diuretic and laxative. SYN: cream of tartar, p. acid tartrate. p. bromide KBr;an obsolescent sedative and hypnotic (sodium bromide is usually preferred). p. chlorate chlorate of potash, KClO3, used as a mouthwash and gargle in stomatitis and follicular pharyngitis; it is incompatible in the dry state with all easily oxidizable substances. p. chloride used to correct p. deficiency. p. citrate a deliquescent powder, soluble in water; used as a diuretic, diaphoretic, expectorant, and systemic and urinary alkalizer. SYN: Rivière salt. p. cyanide a commercial fumigant. dibasic p. phosphate SYN: p. phosphate. p. dichromate, p. bichromate used externally as an astringent, antiseptic, and caustic; a strong oxidizing agent to be handled with care. effervescent p. citrate a mixture of p. citrate, citric acid, sodium bicarbonate, and tartaric acid; used as a gastric antacid and urinary alkalizer. p. ferrocyanide yellow prussiate of potash, used in the preparation of various cyanides and in medicine as an antidote to copper sulfate. p. gluconate gluconic acid p. salt, used in hypokalemia as a replenisher. p. guaiacolsulfonate used as an expectorant. p. hydroxide KOH;a strong, penetrating caustic. SYN: caustic potash. p. hypophosphite formerly believed to have a tonic effect upon the nervous system; may be explosive if triturated or heated with oxidizing agents. p. iodate an oxidizing agent and disinfectant. p. iodide KI;used as an alterative and expectorant, and in certain mycoses. p. metaphosphate a pharmaceutic aid (buffer). monobasic p. phosphate used as a urinary acidifier and buffer. p. nitrate sometimes used as a diuretic and diaphoretic; formerly it was included in asthmatic powders containing stramonium leaves. SYN: niter, saltpeter. penicillin G p. penicillin G p.. p. perchlorate occasionally used, as an alternative to a thiouracil derivative, in the control of hyperthyroidism. p. permanganate a strong oxidizing agent, used in solution as an antiseptic and deodorizing application for foul lesions, and formerly as a gastric lavage in poisoning from morphine, strychnine, aconite, and picrotoxin; in electron microscopy, it stains cytomembranes well and gives results similar to lead hydroxide staining; also used as a fixative (Luft). p. phosphate a mild saline cathartic and diuretic. SYN: dibasic p. phosphate, dipotassium phosphate. p. rhodanate SYN: p. thiocyanate. p. sodium tartrate a mild saline cathartic, used as an ingredient in compound effervescent powders. SYN: Rochelle salt, Seignette salt, sodium p. tartrate. p. sorbate 2,4-hexadienoic acid p. salt; a mold and yeast inhibitor, used as a preservative. p. succinate a deliquescent powder used as a hemostatic. p. sulfate an obsolete laxative. p. sulfocyanate SYN: p. thiocyanate. p. tartrate a mild purgative and diuretic. SYN: soluble tartar. p. thiocyanate formerly used in the treatment of essential hypertension and as a reagent in the detection of copper, iron, and silver. SYN: p. rhodanate, p. sulfocyanate.

potassium-39 (39K)
Most abundant, nonradioactive isotope of potassium; accounts for 93.1% of natural potassium.

potassium-40 (40K)
A naturally occurring (0.0117%) radioactive potassium isotope; beta emitter with half-life of 1.26 billion years; chief source of natural radioactivity of living tissue.

potassium-42 (42K)
An artificial potassium isotope; beta emitter with half-life of 12.36 hr, used as a tracer in studies of potassium distribution in body fluid compartments and in localization of brain tumors.

potassium-43 (43K)
An artificial potassium isotope; a beta emitter with a half-life of 22.3 hr, used as a tracer in myocardial perfusion studies.

potency (po′ten-se)
1. Power, force, or strength; the condition or quality of being potent. 2. Specifically, sexual p.. 3. In therapeutics, the relative pharmacologic activity of a dose of a compound compared with the dose of a different agent producing the same effects; e.g., aspirin and acetaminophen are of equal p. in alleviating headache (same dose required), but ketarolac exhibits greater p. than ibuprofen, as 20 mg of the former is as effective as 400 mg of the latter. [L. potentia, power] sexual p. the ability to carry out and consummate sexual intercourse, usually referring to the male.


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