ascusPronunciation: /ˈaskəs/Definition of ascus noun (plural asci /ˈaskʌɪ, -iː/) Botany a sac, typically cylindrical in shape, in which the spores of ascomycete fungi develop. Origin: mid 19th century: modern Latin, from Greek askos 'bag'ascus in other Oxford dictionaries Definition of ascus in the US English dictionary
