any of several burrowing, often brilliantly colored hemichordates of the class Enteropneusta, usually found in intertidal sand and mud, having an acorn-shaped proboscis and collar.
any of various small burrowing marine animals of the genus Balanoglossus and related genera, having an elongated wormlike body with an acorn-shaped eversible proboscis at the head end: subphylum Hemichordata (hemichordates)
acos language A BBS language for PRODOS 8 on Apple II. Macos is a hacked version of ACOS. (1994-11-08) Contemporary Examples But it’s a fairly clear signal that whatever Obamacare’s acos will do, it will not be what the Cleveland Clinic does. Can the Cleveland Clinic Save American Health Care? Megan McArdle February 25, 2013 […]
a plant without , therefore one belonging to a group lower than the seed plants. noun any plant, such as a fern or moss, that does not possess cotyledons
- Acosta’s disease
acosta’s disease Acosta’s disease A·cos·ta’s disease (ə-kŏs’təz) n. See altitude sickness.
a nonverbal auditory hallucination, as a ringing or hissing.