Ac¶erÏous, a. [Gr. <a> priv. + <keras> a horn.] (Zo”l.) (a) Destitute of tentacles, as certain mollusks. (b) Without antenn‘, as some insects.
AÏcer¶val (#), a. [L. acervalis, fr. acervus heap.] Pertaining to a heap. [Obs.]
AÏcer¶vate (#), v. t. [L. acervatus, p. p. of acervare to heap up, fr. acervus heap.] To heap up. [Obs.] AÏcer¶vate (#), a. Heaped, or growing in heaps, or closely compacted clusters.
Ac·erÏva¶tion (#), n. [L. acervatio.] A heaping up; accumulation. [R.] Johnson. AÏcer¶vaÏtive (#), a. Heaped up; tending to heap up.
AÏcer¶vose (#), a. Full of heaps. [R.] Bailey.
AÏcer¶vuÏline (#), a. Resembling little heaps.
AÏces¶cence (#), AÏces¶cenÏcy (#), } n. [Cf. F. acescence. See Acescent.] The quality of being acescent; the process of acetous fermentation; a moderate degree of sourness. Johnson. AÏces¶cent (#), a. [L. acescens, Ïentis, p. pr. of acescere to turn sour; inchoative of acere to be sour: cf. F. acescent. See Acid.] Turning sour; readily becoming tart or acid; slightly sour. Faraday.
AÏces¶cent, n. A substance liable to become sour.
Ac¶eÏtaÏble (#), n. An acetabulum; or about one eighth of a pint. [Obs.] Holland. Ac·eÏtab¶uÏlar (#), a. CupÏshaped; saucerÐshaped; acetabuliform. Ø Ac·eÏtab·uÏlif¶eÏra (#), n. pl. [NL. See Acetabuliferous.] (Zo”l.) The division of Cephalopoda in which the arms are furnished with cupÐshaped suckers, as the cuttlefishes, squids, and octopus; the Dibranchiata. See Cephalopoda. Ac·eÏtab·uÏlif¶erÏous (#), a. [L. acetablum a little cup + Ïferous.] Furnished with fleshy cups for adhering to bodies, as cuttlefish, etc. Ac·eÏtab¶uÏliÏform (#), a. [L. acetabulum + Ïform.] (Bot.) Shaped like a shallow; saucerÐshaped; as, an acetabuliform calyx. Gray. Ø Ac·eÏtab¶uÏlum (#), n. [L., a little saucer for vinegar, fr. acetum vinegar, fr. acere to be sour.] 1. (Rom. Antiq.) A vinegar cup; socket of the hip bone; a measure of about one eighth of a pint, etc. 2. (Anat.) (a) The bony cup which receives the head of the thigh bone. (b) The cavity in which the leg of an insect is inserted at its articulation with the body. (c) A sucker of the sepia or cuttlefish and related animals. (d) The large posterior sucker of the leeches. (e) One of the lobes of the placenta in ruminating animals.