ACROCERAUNIAN
Ac`ro*ce*rau"ni*an, a. Etym: [L. acroceraunius, fr. Gr.
Defn: Of or pertaining to the high mountain range of "thunder- smitten" peaks (now Kimara), between Epirus and Macedonia. Shelley.
ACRODACTYLUM
Ac`ro*dac"tyl*um, n. Etym: [NL., from Gr. (Zoöl.)
Defn: The upper surface of the toes, individually.
ACRODONT
Ac"ro*dont, n. Etym: [Gr. (Zoöl.)
Defn: 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.
ACROGEN
Ac"ro*gen, n. Etym: [Gr. -gen.] (Bot.)
Defn: A plant of the highest class of cryptograms, including the ferns, etc. See Cryptogamia. The Age of Acrogens (Geol.), the age of coal plants, or the carboniferous era.
ACROGENOUS
Ac*rog"e*nous, a. (Bot.)
Defn: Increasing by growth from the extremity; as, an acrogenous plant.