| iophobia | <psychology> Morbid fear of poisons. Origin: G. Ios, poison, + phobos, fear (05 Mar 2000) |
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| iopromide | A monomeric, nonionic, water-soluble, low osmolar radiographic contrast medium for intravenous urography or angiography. (05 Mar 2000) |
| ioqua shell | <zoology> The shell of a large Dentalium (D. Pretiosum), formerly used as shell money, and for ornaments, by the Indians of the west coast of North America. Origin: From the native name. Source: Websters Dictionary (01 Mar 1998) |
| iota | 1. The ninth letter in the Greek alphabet, ι. 2. In chemistry, denotes the ninth in a series, or the ninth atom from a carboxyl group or other functional group. 3. A tiny or minute amount. (05 Mar 2000) |
| iotacism | A speech defect marked by the frequent substitution of a long e sound (that of the Greek iota) for other vowels. Origin: G. Iota, the letter &iota. (05 Mar 2000) |
| iothalamate meglumine | <chemical> 3-(acetylamino)-2,4,6-triiodo-5-((methylamino)carbonyl) benzoic acid salt with 1-deoxy-1-(methylamino)-d-glucitol. Radiopaque medium used for urography, angiography, venography, and myelography. It is highly viscous and binds to plasma proteins. Pharmacological action: contrast media. Chemical name: D-Glucitol, 1-deoxy-1-(methylamino)-, 3-(acetylamino)-2,4,6-triiodo-5-((methylamino)carbonyl)benzoate (salt) (12 Dec 1998) |
| iothalamic acid | <chemical> 3-(acetylamino)-2,4,6-triiodo-5-((methylamino)carbonyl)benzoic acid. A contrast medium in diagnostic radiology with properties similar to those of diatrizoic acid. It is used primarily as its sodium and meglumine (iothalamate meglumine) salts. Pharmacological action: contrast media. Chemical name: Benzoic acid, 3-(acetylamino)-2,4,6-triiodo-5-((methylamino)carbonyl)- (12 Dec 1998) |
| iothiouracil sodium | The sodium salt of 5-iodo-2-thiouracil; an organic iodine derivative of thiouracil with the thyroid-involuting action of iodine and the capability of inhibiting thyroxine production. (05 Mar 2000) |
| iotrol | 5,5'-[Malonylbis(methylimino)]bis[N, N'-bis[2,3-dihydroxy-1-(hydroxymethyl)propyl]-2,4,6-triiodoisophthalamide];a dimeric, nonionic, water-soluble, low osmolar radiographic contrast medium, used for myelography and other nonvascular applications. Synonym: iotrol. (05 Mar 2000) |
| iotrolan | 5,5'-[Malonylbis(methylimino)]bis[N, N'-bis[2,3-dihydroxy-1-(hydroxymethyl)propyl]-2,4,6-triiodoisophthalamide];a dimeric, nonionic, water-soluble, low osmolar radiographic contrast medium, used for myelography and other nonvascular applications. Synonym: iotrol. (05 Mar 2000) |
| ioversol | N,N'-Bis(2,3-dihydroxypropyl)-5-[N-[2-hydroxyethyl)glycolamido]-2,4,6-triiodoisophthalamide;a water-soluble, nonionic, low osmolar, radiographic contrast medium. (05 Mar 2000) |
| iowas | <ethnology> A tribe of Indians which formerly occupied the region now included in the State of Iowa. Source: Websters Dictionary (01 Mar 1998) |
| ioxaglate | A diagnostic radiopaque medium, usually a combination of ioxaglate meglumine (C24H21I6N5O8-C7 H17NO5), and ioxaglate sodium (C24H20I6N5NaO8); used in angiography, aortography, arteriography, venography, and urography. (05 Mar 2000) |
| ioxaglic acid | <chemical> 3-((((3-(acetylmethylamino)-2,4,6-triiodo-5-((methylamino)carbonyl)benzoyl)amino)acetyl)amino)-5-(((2-hydroxyethyl)amino)carbonyl)-2,4,6-triiodobenzoic acid. An effective, low-osmolar, ionic contrast medium used in various radiographic procedures. Its low systemic toxicity is the combined result of low chemotoxicity and low osmolality. Pharmacological action: contrast media. Chemical name: Benzoic acid, 3-((((3-(acetylmethylamino)-2,4,6-triiodo-5-((methylamino)carbonyl)benzoyl)amino)acetyl)amino)-5-(((2-hydroxyethyl)amino)carbonyl)-2,4,6-triiodo- (12 Dec 1998) |
| ioxilan | A monomeric, nonionic, water-soluble, low osmolar radiographic contrast medium for urography or angiography. (05 Mar 2000) |