noun, plural as·ci [as-ahy, -kahy, -kee] /ˈæs aɪ, -kaɪ, -ki/. Mycology.
Origin of ascus
Examples from the Web for asci
When fully mature, the asci are ruptured and the sporidia escape by a pore which occupies the apex of the perithecium.
They are all cup-or saucer-shaped; externally warted, scurvy or smooth; asci cylindrical, 8-spored.The Mushroom, Edible and Otherwise|M. E. Hard
The Ascomycetes are primarily subdivided into Exoasci and Carpoasci, groups based on the character of the asci.
These cysts are respectively known as sporangia, and asci or thecæ.
The spores in this species are exceedingly minute, oblong, and not contained in asci.An Elementary Text-book of the Microscope|John William Griffith
noun plural asci (ˈæsaɪ, ˈæskaɪ)
Word Origin for ascus
"sac in certain fungi," 1830, Modern Latin, from Greek askos "leather bag, wine skin," of unknown origin.