Defn: Without light.

APHOTIC REGION
Aphotic region. (Phytogeog.)

Defn: A depth of water so great that only those organisms can exist that do not assimilate.

APHRASIA A*phra"si*a, n. [NL., fr. Gr. 'a priv. + fra`sis speech.] (Med.) (a) = Dumbness. (b) A disorder of speech in which words can be uttered but not intelligibly joined together.

APHRITE
Aph"rite, n. (Min.)

Defn: See under Calcite.

APHRODISIAC; APHRODISIACAL
Aph`ro*dis"i*ac, Aph`ro*di*si"a*cal, a. Etym: [Gr. Aphrodite.]

Defn: Exciting venereal desire; provocative to venery.

APHRODISIAC
Aph`ro*dis"i*ac, n.

Defn: That which (as a drug, or some kinds of food) excites to venery.