(I*o"ta*cism) n. [Gr. 'iotakismo`s a laying too much stress upon the iota (&iota): cf. F. iotacisme.
See Iota.] The frequent use of the sound of iota (that of English e in be), as among the modern
Greeks; also, confusion from sounding &epsilon, &iota, &eta, &upsilon, &epsilon&iota, etc., like &iota.
I O U
(I O U) [i. e., I owe you.] A paper having on it these letters, with a sum named, and duly signed;
in use in England as an acknowledgment of a debt, and taken as evidence thereof, but not amounting
to a promissory note; a due bill. Wharton. Story.
(I"o*was) n. pl.; sing. Iowa. (Ethnol.) A tribe of Indians which formerly occupied the region now
included in the State of Iowa.
(Ip"e*cac) n. An abbreviation of Ipecacuanha, and in more frequent use.
(Ip`e*cac`u*an"ha) n. [Pg. ipecacuanha (cf. Sp. ipecacuana); fr. Braz. ipe-kaa-guena,
prop., a creeping plant that causes vomiting.] (Med. & Bot.) The root of a Brazilian rubiaceous herb
largely employed as an emetic; also, the plant itself; also, a medicinal extract of the root. Many other
plants are used as a substitutes; among them are the black or Peruvian ipecac the white ipecac (Ionidium
Ipecacuanha), the bastard or wild ipecac (Asclepias Curassavica), and the undulated ipecac (Richardsonia
(Ip"o*cras) n. Hippocras. [Obs.] Chaucer.
(||Ip`o*m"a) n. [NL. "Named, according to Linnæus, from Gr. 'i`ps, 'ipo`s, a bindweed [which it
is not], and "o`moios like." Gray.] (Bot.) A genus of twining plants with showy monopetalous flowers,
including the morning-glory, the sweet potato, and the cypress vine.
(Ip`o*m"ic) a. (Chem.) Pertaining to, or designating, an acid obtained by the oxidation of convolvulin
(obtained from jalap, the tubers of Ipoma purga), and identical in most of its properties with sebacic
(Ir-) A form of the prefix in-. See In- .
(I"ra*cund) a. [L. iracundus, fr. ira anger.] Irascible; choleric. "Iracund people." Carlyle.
(I*ra"de) n. [Turk.] A decree of the Sultan.
(I`ran") n. [Mod. Persian Iran. Cf. Aryan.] The native name of Persia.