cleistogamyPronunciation: /klʌɪˈstɒgəmi/Definition of cleistogamy noun [mass noun] Botany self-fertilization that occurs within a permanently closed flower. Derivatives cleistogamous adjective Origin: late 19th century: from Greek kleistos 'closed' + -gamy (from gamos 'marriage')cleistogamy in other Oxford dictionaries Definition of cleistogamy in the US English dictionary
