A< \.\ I IK IPELYS 



23 



A< CENTUATION 



Acanthopelys [ak-anth-op' '-el-is) [aicavda, thorn ; -i'/\r, 

 pelvis]. A pelvis that is encroached upon by exostoses. 



Acanthophorous [ak-anth-ojjP-or-u | [dxavfoz, a spine ; 

 Aipeiv, to bear]. In biology, bearing or producing 

 spines or thorns. 



Acanthopod [ak-anth' '-o-pod\ [anavOa, a spine; iroiig, 

 foot!. In biology, an animal with spiny feet, or 

 spine-like claws. 



Acanthopterous [ak-anth-op 1 '-ter-us) [anavda, a spine; 

 irrtpov, a wing]. In biology, having spiny wings or 

 fins. 



Acanthosis (ak-an/h-o'-sis) [anavda, thorn] . Any skin 

 disease marked by abnormalities in the prickle-cell 

 layer. A. Nigricans, a general pigmentation of 

 the skin, with papillary, mole-like growths; a rare 

 conditii in. 



Acanthus [ak-anth' -us) [aKavdoc, a spine]. A genus 

 of European herbs. ./. mollis and A. spinosa were 

 formerly much esteemed as vulnerary, antidysenteric 

 and antihectic remedies ; they are demulcent and 

 mucilaginous. Unof. 



Acapsular [ah-kap ' -su-lar) [a priv. ; capsula, a small 

 box or capsule]. In biology, destitute of a capsule. 



Acardia [ah-kar^-de-ah) \_a priv.; aapdia, heart]. A 

 monstrosity without heart, developed simultaneously 

 with a normal fetus. 



Acardiac [ah-kar'-de-ak] [a priv. ; napdla, heart]. I. 

 Having no heart. 2. A fetus with no heart. See 

 Acardiacus. 



Acardiacus [ah-kar-di'-ak-us) [a. priv.; napdia, heart]. 

 See Acardiac. A synonym, employed mainly by the 

 German writers, for omphalosite. The term was 

 adopted because of the frequent absence of the heart 

 in this condition. A. Acormus. See Asomala. A. 

 Anceps. Same as Paracephalus, q. v. 



Acardiohemia, or Acardiohaemia [ah-kar-de-o-ke f - 

 me-ah) [a priv.; napdia, heart; atita, blood]. Lack 

 of blood in the heart. 



Acardionervia [ah-kar-de-o-ner , -ve-ah) [a priv.; napdia, 

 heart; nervus, a sinew]. Diminished nervous action 

 or nerve-stimulus in the heart. 



Acardiotrophia {ah-kar-de-o-trc/ -fe-ah) [*/ priv.; napdia, 

 heart; rpcxpi/, nutrition]. Atrophy of the heart. 



Acarian [ah-ka' '-re-an) [atcapi/g, small, tiny]. Of or 

 pertaining to the acarids or mites. 



Acariasis [ak-ar-i'-as-is) [a priv. ; xapeiv, to cut]. See 

 Mange. 



Acaricidal [ak-ar-is-V-dal) [anapi/g, small, tiny ; ccedere, 

 to kill]. Destructive of acarids, or mites. 



Acaricide [ak-ar'-is-id) [dfcap^c, small, tiny ; ccedere, to 

 kill]. An agent that destroys acarids. 



Acarid, Acaridan yak'-ar-id, ak-ar'-id-an) [anapqc, 

 small, tiny]. Pertaining to Acarus. 



Acarina [ak-ar-i' '-naA) [L.]. An order of insects (mites) 

 with stout bodies, having the unjointed abdomen con- 

 solidated with the head and thorax, with biting, suck- 

 ing, or puncturing mouth-organs, breathing mostly by 

 means of trachea;. 



Acarinosis [ak-ar-in-o' 'sis) [acarus, a mite]. Any 

 disease, as the itch, produced by a mite, or acarid. 



Acarodermatitis [ak-ar-o-der-mat-i' -tis) [acarus, a 

 mite; dermatitis'],. Dermatitis dependent upon or 

 caused by acari, or mites. 



Acaroid [akf-ar-oid) [Acarus, a mite]. Mite-like. A. 

 Gum, Botany Hay Gum; Resina lutea. An aromatic 

 resin used in Australia as a remedy for gastric troubles, 

 intestinal catarrhs, diarrheas, etc. Dose grs. viij-xvj, 

 in alcoholic solution. Unof. A. Resin, Black Boy 

 Gum. The resin of various species of Xanthorrhea, 

 q. v. Benzoic acid is prepared from it, and it is said 

 to have the properties of storax, and balsam of 

 Peru. 



Acarotoxic [ak-ar-o-toks' -ik) [acarus, a mite ; to£lk6v, 

 a poison]. Poisonous, or destrui tive, to acari. 



Acarpae [a-Aat^-pl) [a priv.; KO/cwr<5c, fruit]. A name 

 proposed lor a f^roiip of skin diseases in which there 

 are no papules, tubercles, or elevated points. 



Acarpous [ak-ai^-pus) [a priv.; mpirSq, fruit]. Hav- 

 ingnoeleval it nodular. In biology, producing 



no fruit; sterile, barren. 



Acarus [ak'-ar-us) [a priv. ; xeipeiv, to cut (because so 

 small) : pi, Acari], The mite, or tick, a parasite of 

 man and animals. A. autumnalis the harvest-bug, 

 now (ailed Leptui autumnalis. A. folliculorum. 

 Steatozoon. A. scabiei. See Scabies. 



Acatalepsy [ah-kaf '-al-ep-se) [a priv. ; KaraXa/i/3ai 

 to understand] . 1. 1 ocertainty in diagnosis. 2. Mental 

 impairment : dementia. 



Acataleptic [ah-kat-al-ep* '-tik) [a priv.; m.Ta'Xap.fta.vziv, 

 to understand]. Uncertain; doubtful (used of a 

 prognosis or a diagnosis of a disease). 



Acatamathesia [ah-kat-am-ath-e / -ze-aJi) [a priv.; 

 KaTauaOt/oig, understanding]. I. Inability to under- 

 stand conversation, due to mental disorder. 2. A 

 morbid blunting of the perceptions ; as in psychical 

 deafness, or psychical blindne--. 



Acataphasia [ah-kat-af-a' '-ze-ah) [a priv. ; Kara, after; 

 qaoic, utterance]. A disorder in the syntactical 

 arrangement of uttered speech, due to some central 

 lesion. 



Acataposis [ah-kat-ap f -o-sis) [a priv. ; Kara, down ; 

 ttooic, a drinking, a swallowing]. A difficulty in swal- 

 lowing ; dysphagia. 



Acatastasia [ah- kat-as-ta 1 '-ze-ah) [anaraoTaGia'] . Ab- 

 sence of regularity, or of fixed character, in the course 

 of a disease, or in the nature of an excretion. 



Acatastatic [ah-kat-as-tat'-ik). Marked or character- 

 ized by acatastasia; irregular; not of definite type. 



Acatharsia [ah-kath-ar' -se-ah) [anaQapcia, uncleansed 

 state]. Impurity; foulness; need of purgation, or 

 cleansing. 



Acaudal [ah-kaw' '-dal) [d priv. ; cauda, a tail]. 

 Acaudate, ecaudate, tailless, anurous. 



Acaudate (ah-karo'-ddl). Same as Acaudal. 



Acaules [ah-kaw' -lez) [h priv. ; caulis, a stem]. 

 Plants which, as in the case of lichens, algae, etc., lack 

 a stalk, or have it but very indistinctly developed. 



Acaulescence [ah-haw-ies'-ens) [a priv.; caulis, 

 a stalk]. In biology, plants wherein the growth of 

 the main stem is arrested. Also Acaulosia. 



Acaulescent [ah-kaw-les'-ent) [a priv. ; caulis, a , 

 stalk]. In botany, stemless. 



Acaulosia [ah-kaw-lo' '-se-ah) [a priv. ; caulis, a stalk]. 

 See Acaulescence. 



Accelerans Nerve [ak-seV '-er-ans) [L.]. A nerve from 

 the accelerans center in the medulla to the heart, inter- 

 mediating acceleration of its rhythm. 



Acceleration [ak-sel-er-a' -shun) [accele ratio]. Quick- 

 ening, as of the pulse, or of the respiratory function. 

 In biology, the term applied to change of structure 

 during growth brought about by the addition of parts, 

 either by •• homotopy" or by " heterotopy." 



Accelerative Epilepsy [ak-sel' '-er-a-tiv ep'-il-ep-se). 

 See Epilepsy. 



Accelerator Urinae [ak-seV -er-a-tor u-ri'-ne) [L.]. A 

 muscle of the penis whose function is to expel the last 

 drops in urination, to expel the semen, and to assist 

 erection. The sphincter vaginae is its analogue in the 

 female. See Muscles, fable of . 



Accentuation [ak-sen-tu-a' '-shun) [accentuare]. A 

 term applied to the heart sounds, generally the second, 

 when they are louder, because of an increased blood- 

 tension in the vessels, giving rise to a forcible elastic 

 recoil of the latter with abrupt closure of the valves. 



