Definitions for: Ascus

[n] saclike structure in which ascospores are formed through sexual reproduction of ascomycetes

Webster (1913) Definition: As"cus, n.; pl. Asci. [NL., fr. Gr. ? a bladder.] (Bot.)
A small membranous bladder or tube in which are inclosed the
seedlike reproductive particles or sporules of lichens and
certain fungi.

See Also: ascomycete, ascomycetous fungus, reproductive structure