ICHTHYSMUS 



600 



IDEOMOTION 



from eating the flesh of certain fish, and also to the 

 poisonous principle. It may be a natural poisonous 

 principle, or the result of putrefactive fermentation of 

 the substance of the fish. It is probably a ptomaine. 



Ichthysmus (ik-thiz' -mus) [\%Qvg, fish]. Poisoning by 

 shell-fish and other fish. It is due to the absorption of a 

 poison known as mytilotoxin , that exists chiefly in the 

 liver of the mussel. The symptoms are numbness 

 and coldness, apyrexia, dilated pupils, rapid pulse, 

 and death from collapse, at times within two hours. 



Ichthytoxin (ik-the-toks' -in) [tjfruc, fish ; tq^lkov, poi- 

 son]. A poisonous substance obtained from the blood- 

 serum of eels. 



Icica (is'-ik-ah) [S. Am.]. A genus of amyridaceous 

 trees, mostly of tropical America. Varieties of elemi, 

 caranna and tacamahac are produced by trees of this 

 genus. Unof. 



Icmacratia (ik-mak-ra' -she-ah) [lnjudg, moistness ; aapa- 

 ria, weakness]. I. Inability to retain the fluids of 

 the body. 2. Depraved or enfeebled state of the 

 bodily fluids or humors. Obsolete. 



Icmastic (ik-mas' -tik) [cK/idg, fluid]. Relating to the 

 fluids or humors of the body. 



Icon (i'-kon) [e'ikuv, image] . An image or model. 



Iconography (i-kon-og' -ra-fe) [eckuv, image ; ypdtpeiv, 

 to write]. A description by means of pictorial illus- 

 tration. 



Icosander (i-ko-san'-der) [eXkogi, twenty ; avtjp, male]. 

 In biology, a plant having twenty or more perigynous 

 stamens. 



Icterepatitis (ik-ter-ep-at-i' '-tis)[iKTEpog , jaundice; ijnap, 

 liver ; trig , inflammation] . Inflammation of the liver 

 attended with jaundice. 



Icteric (ik-ter' '-ik) [luTEpindg, pertaining to jaundice]. 

 Pertaining to jaundice. 



Icterine (ik'-ter-in) [inrepog, jaundice]. Yellow, or 

 with yellow marks. 



Icteritia (ik-ter-ish' -e-ah) [L.]. I. Same as Icterus. 

 2. Discoloration of the skin. 



Icteritious [ik-ter-ish' -us) [icteritia, jaundice]. Af- 

 fected with icterus or icteritia. 



Icterode (ik'-ter-od) [iKTspddr/g, jaundiced]. Icteroid. 



Icteroid (ik'-ter-oid) [larepog, jaundice ; F.ldog, form]. 

 Resembling or having the nature of jaundice. 



Icterophthisis (ik-ter-off ' -this-is) [inTepog, jaundice ; 

 <f>6ioig, wasting]. Pulmonary tuberculosis with yellow 

 discoloration of the skin. 



Icterus (ik'-ter-us) [iKrepog, jaundice]. Jaundice, q. v. 

 I. gravis, Acute Yellow Atrophy of the Liver. 

 A rare disease of the liver in which there is a rapid 

 wasting of the liver-substance, with marked jaundice, 

 and death. It may be either primary or secondary. 

 Associated with the jaundice are headache and marked 

 cerebral symptoms, hemorrhage from the mucous sur- 

 faces, and rise of temperature. The urine contains 

 leucin and tyrosin. The liver is much reduced in 

 weight, flattened, soft, its capsule wrinkled ; microsco- 

 pically there is an extensive destruction of the liver- 

 cells, due to fatty degeneration. The disease occurs 

 most frequently in females, and in early adult life. 

 The primary form of the disease is usually encountered 

 in pregnancy and during the puerperium. The second- 

 ary form may follow other morbid conditions of the 

 liver, and phosphorus-poisoning. I., Hematogenic, 

 See Jaundice. I., Hepatogenic. See Hepatogenic. 

 I. neonatorum, that which is sometimes observed in 

 an infant during the first few days afterbirth ; it is pos- 

 sibly an indirect result of tying the umbilical cord, or 

 may be due to a breaking-down of the red blood-cor- 

 puscles from exposure to cold. I., Urobilin, a form of 

 jaundice, so called, due to the production in the body 

 of an excess of urobilin by oxidation of the bile-pig- 



ments. The skin and conjunctivae are colored yellow, 

 the urine dark-brown, but no true jaundice exists. 



Ictus (ik'-tus) [L., a stroke]. A sudden or unforeseen 

 attack. I. epilepticus, an epileptic fit. I. paralyti- 

 cus, a paralytic stroke. I. solis, sunstroke. 



Id [idus, the dividing or division]. In biology, ac- 

 cording to Weismann's theory of the germ-piasm, a 

 vital unit of the third degree, having a definite struc- 

 ture of determinants, which in their turn are made up 

 of biophores ; an " ancestral germ-plasm,'' or unit 

 containing all the primary constituents of the species. 

 Each id represents an individuality, and is probably 

 identical with the "microsome" of the nuclear rod. 

 Cf. Idioplasm; Idant. 



-id, or ide (id) \_idus, a term]. A suffix used in chem- 

 istry to denote a combination of two elementary sub- 

 stances. 



Idant (i'-dant) [idus, the dividing or division]. In 

 biology, according to Weismann's theory of the germ- 

 plasm, a vital unit of the fourth degree ; a group of 

 ids, differing from the latter in not being perfectly 

 invariable quantities, but only relatively constant, 

 their constitution being modified from time to time, so 

 that the ids which previously belonged to the idant A 

 may later take part in the composition of the idant B 

 or C. A chromosome (chromatosome) or nuclear rod, 

 composed of vital units or ancestral plasms, termed 

 ids or microsomata (microsomes). 



-ide [eldog, resembling in form]. A suffix denoting 

 resemblance to the object with the name of which the 

 designated body is combined. 



Idea (i-de'-ah) [ids, Idea, form or semblance]. A men- 

 tal representation of something perceived. I. -chase, 

 a condition in acute mania in which disconnected ideas 

 and fancies flow rapidly through the mind. It is a term 

 much used by German authors. I., Fixed, that form 

 of mania in which one dominant idea controls all 

 actions. I., Imperative, a morbid idea or insane 

 suggestion imperiously demanding notice, die patient 

 often being painfully conscious of its domination over | 

 his will. . 



Ideation (i-de-a f -shun) [Idea, form or semblance]. The j 

 formation of a mental conception ; the cerebral action { 

 by which, or in accord with which, an idea is formed. ' 



Identical (i-den' -tik-al) [identicus, the same]. The 

 same. I. Points, corresponding points of the two 

 retinas, or the two positions in normal eyes where the 

 image of an object is focused upon the retina. 



Identism (i-den' '-tizni) [idem, the same]. The theory 

 that chancre, chancroid, and gonorrhea are due t< 

 and the same poison or virus. 



Identist (i-den' -tist) [idem, the same]. A term applied 

 to one who believes in the identity of certain dis 

 e. g. , that gonorrhea and hard and soft chancr 

 due to the same specific virus, or that typhus ami 

 typhoid fevers are identical . 



Identity (i-den' -tit- e) [idem, the same]. Absolute 

 sameness. I., Personal, one's personal existi 

 the continuity of one's state as a person ; the reality 

 of the existence of any person ; in law, the fa 

 one being the person he is assumed to be ; that which 

 is commonly proved by the establishment ol simi- 

 larity or sameness of age, sex, physical charactei 

 marks, and peculiar habits. * 



Ideo-dynamism (i-de-o-di'-nam-izm) [/'■ 



dvvafiig, force]. The domination of an idea ; the j 

 control exercised by a suggested idea over the subse 

 quent acts of a person who is, or has been, hyp 

 notized. 



Ideomotion (i-de-o-mo' -shun) [Wt-n, idea; ///, 

 moving]. Motion or action due to som< 

 neither purely voluntary nor reflex. 



