||Ac"ri*ta (&?;), n. pl. [NL., from Gr. &?; indiscernible; 'a priv. + &?; to distinguish.] (Zoöl.) The lowest groups of animals, in which no nervous system has been observed.
Ac"ri*tan (&?;), a. (Zoöl.) Of or pertaining to the Acrita. -- n. An individual of the Acrita.
Ac"rite (&?;), a. (Zoöl.) Acritan. Owen.
A*crit"ic*al (&?;), a. [Gr. 'a priv. + &?; critical.] (Med.) Having no crisis; giving no indications of a crisis; as, acritical symptoms, an acritical abscess.
Ac`ri*to*chro"ma*cy (&?;), n. [Gr. &?; undistinguishable; 'a priv. + &?; to separate, distinguish + &?; color.] Color blindness; achromatopsy.
Ac"ri*tude (&?;), n. [L. acritudo, from acer sharp.] Acridity; pungency joined with heat. [Obs.]
Ac"ri*ty (&?;), n. [L. acritas, fr. acer sharp: cf. F. âcreté.] Sharpness; keenness. [Obs.]
{ Ac`ro*a*mat"ic (&?;), Ac`ro*a*mat"ic*al (&?;), } a. [Gr. &?;, fr. &?; to hear.] Communicated orally; oral; -- applied to the esoteric teachings of Aristotle, those intended for his genuine disciples, in distinction from his exoteric doctrines, which were adapted to outsiders or the public generally. Hence: Abstruse; profound.
Ac`ro*at"ic (&?;), a. [Gr. &?;, fr. &?; to hear.] Same as Acroamatic.
Ac"ro*bat (&?;), n. [F. acrobate, fr. Gr. &?; walking on tiptoe, climbing aloft; &?; high + &?; to go.] One who practices rope dancing, high vaulting, or other daring gymnastic feats.
Ac`ro*bat"ic (&?;), a. [Cf. F. acrobatique.] Pertaining to an acrobat.
-- Ac`ro*bat"ic*al*ly, adv.
Ac"ro*bat*ism (&?;), n. Feats of the acrobat; daring gymnastic feats; high vaulting.
Ac`ro*car"pous (&?;), a. [Gr. &?; extreme, highest + &?; fruit.] (Bot.) (a) Having a terminal fructification; having the fruit at the end of the stalk. (b) Having the fruit stalks at the end of a leafy stem, as in certain mosses.
Ac`ro*ce*phal"ic (&?;), a. [Gr. &?; highest + &?;. See Cephalic.] Characterized by a high skull.
Ac`ro*ceph"a*ly (&?;), n. Loftiness of skull.
Ac`ro*ce*rau"ni*an (&?;), a. [L. acroceraunius, fr. Gr. &?; high, n. pl. &?; heights + &?; thunderbolt.] Of or pertaining to the high mountain range of "thunder- smitten" peaks (now Kimara), between Epirus and Macedonia. Shelley.
||Ac`ro*dac"tyl*um (&?;), n. [NL., from Gr. &?; topmost + &?; finger.] (Zoöl.) The upper surface of the toes, individually.
Ac"ro*dont (&?;), n. [Gr. 'a`kros summit + 'odoy`s, 'odo`ntos, a tooth.] (Zoöl.) One of a group of lizards having the teeth immovably united to the top of the alveolar ridge. -- a. Of or pertaining to the acrodonts.
Ac"ro*gen (&?;), n. [Gr. 'a`kros extreme, high + -gen.] (Bot.) A plant of the highest class of cryptogams, including the ferns, etc. See Cryptogamia.
The Age of Acrogens (Geol.), the age of coal plants, or the carboniferous era.
Ac*rog"e*nous (&?;), a. (Bot.) Increasing by growth from the extremity; as, an acrogenous plant.
A*cro"le*in (&?;), n. [L. acer sharp + olre to smell.] (Chem.) A limpid, colorless, highly volatile liquid, obtained by the dehydration of glycerin, or the destructive distillation of neutral fats containing glycerin. Its vapors are intensely irritating. Watts.
Ac"ro*lith (&?;), n. [L. acrolthus, Gr. 'akroli`qos with the ends made of stone; 'a`kros extreme + li`qos stone.] (Arch. & Sculp.) A statue whose extremities are of stone, the trunk being generally of wood. Elmes.
{ A*crol"i*than (&?;), Ac`ro*lith"ic (&?;), } a. Pertaining to, or like, an acrolith.
Ac`ro*meg"a*ly (&?;), n. [NL. acromegalia, fr. Gr. 'a`kron point, peak + &?;, &?;, big.] (Med.) Chronic enlargement of the extremities and face.
A*cro"mi*al (&?;), a. [Cf. F. acromial.] (Anat.) Of or pertaining to the acromion. Dunglison.
||A*cro"mi*on (&?;), n. [Gr. &?;; 'a`kros extreme + &?; shoulder: cf. F. acromion.] (Anat.) The outer extremity of the shoulder blade.
Ac`ro*mon`o*gram*mat"ic (&?;), a. [Gr. 'a`kros extreme + &?; alone + &?; a letter.] Having each verse begin with the same letter as that with which the preceding verse ends.
{ A*cron"yc (&?;), A*cron"ych*al (&?;), } a. [Gr. 'akro`nychos at nightfall; 'a`kros + ny`x night.] (Astron.) Rising at sunset and setting at sunrise, as a star; -- opposed to cosmical.
The word is sometimes incorrectly written acronical, achronychal, acronichal, and acronical.
A*cron"yc*al*ly, adv. In an acronycal manner as rising at the setting of the sun, and vice versa.
Ac"ro*nyc"tous (&?;), a. [Gr. 'akro`nyktos; 'a`kros + ny`x, nykto`s, night.] (Astron.) Acronycal.
A*crook" (&?;), adv. Crookedly. [R.] Udall.
A*crop"e*tal (&?;), a. [Gr. 'a`kros summit + L. petere to seek.] (Bot.) Developing from below towards the apex, or from the circumference towards the center; centripetal; -- said of certain inflorescence.
A*croph"o*ny (&?;), n. [Gr. 'a`kros extreme + &?; sound.] The use of a picture symbol of an object to represent phonetically the initial sound of the name of the object.
||Ac`ro*po"di*um (&?;), n. [Gr. 'a`kros topmost + poy`s, podo`s, foot.] (Zoöl.) The entire upper surface of the foot.
A*crop"o*lis (&?;), n. [Gr. 'akro`polis; 'a`kros extreme + po`lis city.] The upper part, or the citadel, of a Grecian city; especially, the citadel of Athens.
Ac"ro*pol"i*tan (&?;), a. Pertaining to an acropolis.
Ac"ro*spire (&?;), n. [Gr. &?; + &?; anything twisted.] (Bot.) The sprout at the end of a seed when it begins to germinate; the plumule in germination; -- so called from its spiral form.
Ac"ro*spire, v. i. To put forth the first sprout.
Ac"ro*spore (&?;), n. [Gr. &?; + &?; fruit.] (Bot.) A spore borne at the extremity of the cells of fructification in fungi.
Ac"ro*spor"ous (&?;), a. Having acrospores.
A*cross" (#; 115), prep. [Pref. a- + cross: cf. F. en croix. See Cross, n.] From side to side; athwart; crosswise, or in a direction opposed to the length; quite over; as, a bridge laid across a river. Dryden.
To come across, to come upon or meet incidentally. Freeman. -- To go across the country, to go by a direct course across a region without following the roads.
A*cross", adv. 1. From side to side; crosswise; as, with arms folded across. Shak.