Apex of the earth's motion(Astron.), that point of the heavens toward which the earth is moving in its orbit.

Aphæresis
(||A*phær"e*sis) n. [L.] Same as Apheresis.

Aphakia
(||A*pha"ki*a) n. [NL.; Gr. 'a priv. + seed of a lentil.] (Med.) An anomalous state of refraction caused by the absence of the crystalline lens, as after operations for cataract. The remedy is the use of powerful convex lenses. Dunglison.

Aphakial
(A*pha"ki*al) a. (Med.) Pertaining to aphakia; as, aphakial eyes.

Aphaniptera
(||Aph`a*nip"te*ra) n. pl. [NL., fr. Gr. invisible ('a priv. + to appear) + a wing.] (Zoöl.) A group of wingless insects, of which the flea in the type. See Flea.

Aphanipterous
(Aph`a*nip"ter*ous) a. (Zoöl.) Of or pertaining to the Aphaniptera.

Aphanite
(Aph"a*nite) n. [Gr. invisible; 'a priv. + to appear.] (Min.) A very compact, dark-colored ock, consisting of hornblende, or pyroxene, and feldspar, but neither of them in perceptible grains.

Aphanitic
(Aph`a*nit"ic) a. (Min.) Resembling aphanite; having a very fine-grained structure.

Aphasia
(||A*pha"si*a Aph"a*sy) n. [NL. aphasia, Gr. fr. not spoken; 'a priv. + to speak: cf. F. aphasie.] (Med.) Loss of the power of speech, or of the appropriate use of words, the vocal organs remaining intact, and the intelligence being preserved. It is dependent on injury or disease of the brain.

Aphasic
(A*pha"sic) a. Pertaining to, or affected by, aphasia; speechless.

Aphelion
(A*phel"ion) n.; pl. Aphelia (Astron.) That point of a planet's or comet's orbit which is most distant from the sun, the opposite point being the perihelion.

Apheliotropic
(A*phe`li*o*trop"ic) a. [Gr. + sun + belonging to a turning.] Turning away from the sun; — said of leaves, etc. Darwin.

Apheliotropism
(A*phe`li*ot"ro*pism) n. The habit of bending from the sunlight; — said of certain plants.

Aphemia
(||A*phe"mi*a) n. [NL., fr. Gr. 'a priv. + voice.] (Med.) Loss of the power of speaking, while retaining the power of writing; — a disorder of cerebral origin.

Apheresis
(A*pher"e*sis) n. [L. aphaeresis, Gr. fr. to take away; + to take.]

Apery
(Ap"er*y) n.; pl. Aperies.

1. A place where apes are kept. [R.] Kingsley.

2. The practice of aping; an apish action. Coleridge.

Apetalous
(A*pet"al*ous) a. [Pref. a- not + petal.] (Bot.) Having no petals, or flower leaves. [See Illust. under Anther].

Apetalousness
(A*pet"al*ous*ness), n. The state of being apetalous.

Apex
(A"pex) n.; pl. E. Apexes ; L. Apices [L.]

1. The tip, top, point, or angular summit of anything; as, the apex of a mountain, spire, or cone; the apex, or tip, of a leaf.

2. (Mining) The end or edge of a vein nearest the surface. [U.S.]


  By PanEris using Melati.

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