Acerous \Ac"er*ous\, a. Same as {Acerose}. [1913 Webster]
Acerous \Ac"er*ous\, a. [Gr. [alpha] priv. + ke`ras a horn.] (Zool.) (a) Destitute of tentacles, as certain mollusks. (b) Without antenn[ae], as some insects. [1913 Webster]