Medical Dictionary

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iteral (i′ter-al)
Relating to an iter.

-ites
G. adjectival suffix attached to noun stems, corresponding to L. -alis or -inus or to Eng. -y or -like. An adjective formed with this suffix sometimes stands alone, representing a phrase from which a noun has been dropped ( e.g., tympanites for tympanites hydrops, drumlike swelling of the abdomen. SEE ALSO: -ite, -itis. [G. ites,]

-itides
Plural of -itis.

-itis
Feminine form of the G. adjectival suffix -ites. An adjective formed with this suffix sometimes stands alone, representing a phrase from which a noun has been droped e.g., nephritis for nephritis nosos, disease of the kidneys). Hence is has become in effect a noun suffix. Moreover, it so frequently occurs in terms for inflammatory disorders that it has acquired the denotation of inflammation. SEE ALSO: -ites. [G. -ites]

Ito
Toshio, 20th century Japanese physician. See I. cells, under cell.

Ito
Minor, 20th century Japanese dermatologist. See I. nevus, hypomelanosis of I..

ITP
Abbreviation for idiopathic thrombocytopenic purpura; inosine 5′-triphosphate.

itramin tosylate (i′tra-min)
A vasodilator.

IU
Abbreviation for international unit.

IUB
Abbreviation for International Union of Biochemistry.

IUCD
Abbreviation for intrauterine contraceptive devices, under device.

IUD
Abbreviation for intrauterine devices, under device.

IUI
Abbreviation for intrauterine insemination.

IUPAC
Abbreviation for International Union of Pure and Applied Chemistry.

I-V
Abbreviation for intraventricular.

I.V., i.v.
Abbreviation for intravenous, or intravenously.

IVB
Abbreviation for intraventricular block.

IVC
Abbreviation for inferior vena cava.

Ivemark
Björn, Swedish pathologist, *1925. See I. syndrome.

ivermectin (i-ver-mek′tin)
A semisynthetic macrolide antibiotic effective in the treatment of filariasis. The drug destroys Onchocerca microfilaria and Filaria bancrofti. Also approved by the FDA for the treatment of scabies by topical administration.

IVF
Abbreviation for in vitro fertilization.

IVF-ET
Abbreviation for in vitro fertilization and in vivo transfer of the embryo to the uterus, Fallopian tube, or the peritoneal cavity.

IVP
Abbreviation for intravenous pyelography or pyelogram.

IVU
Abbreviation for intravenous urogram; preferred to IVP. See intravenous urography.

Ivy
Robert H., U.S. oral and plastic surgeon, 1881–1974. See I. loop wiring, I. bleeding time test.

Ixodes (ik-so′dez)
A genus of hard ticks (family Ixodidae), many species of which are parasitic on humans and animals; they are characterized by an anal groove surrounding the anus anteriorly, absence of eyes and festoons, and marked sexual dimorphism; about 40 species have been described from North America. [G. i., sticky, like bird-lime, fr. ixos, mistletoe, + eidos, form] I. cookei a species that is a vector of Powassan virus in Canada. I. dammini a species that is a vector of Lyme disease (Borrelia burgdorferi) and human babesiosis (Babesia microti) in the U.S. Bites causing Lyme disease in humans are from nymphal ticks about the size of a pencil point, infected with B. burgdorferi from white-footed field mice. Adult ticks complete their two-year life cycle feeding on deer. I. pacificus the California black-legged tick, a species that is the vector of Lyme disease in the western U.S. I. persulcatus the taiga tick, a Eurasian species that is a vector for Russian spring-summer encephalitis and Lyme disease. I. redikorzevi a Eurasian species that has caused human toxicosis in Israel. I. ricinus the castor bean tick, a Eurasian species that infests cattle, sheep, and wild animals, and transmits the piroplasm Babesia divergens, the tick-borne encephalitis virus, and the Lyme disease bacterium. I. scapularis the black-legged or shoulder tick, a species found on animals in the southern and eastern U.S.; is the primary vector of Lyme disease in the U.S. I. spinipalpis a species parasitic on wild rodents in British Columbia and the vector of Powassan virus in mice of the genus Peromyscus.

ixodiasis (ik-so-di′a-sis)
Skin lesions caused by the bites of ixodid ticks.

ixodic (ik-sod′ik)
Relating to or caused by ticks.

ixodid (ik′so-did)
Common name for members of the family Ixodidae.

Ixodidae (ik-sod′i-de)
A family of ticks (order Acarina, suborder Ixodidea), the so-called “hard” ticks, characterized by rigid body form, presence of a dorsal shield, and an anteriorly projecting capitulum. It includes the genera Ixodes, Hyalomma, Amblyomma, Boophilus, Margaropus, Dermacentor, Haemaphysalis, and Rhipicephalus, species of which transmit many important human and animal diseases and cause tick paralysis; they occasionally attack humans, a few habitually so. [G. ixodes, sticky]

Ixodoidea (ik′so-do-id′e-a)
Superfamily of the order Acarina that includes the families Ixodidae and Argasidae. [G. ixodes, sticky]

in utero (in u′ter-o)
Within the womb; not yet born. [L.]

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