sporophytePronunciation: /ˈspɒrəfʌɪt, ˈspɔː-/Definition of sporophyte noun Botany (in the life cycle of plants with alternating generations) the asexual and usually diploid phase, producing spores from which the gametophyte arises. It is the dominant form in vascular plants, e.g. the frond of a fern. Derivatives sporophyticPronunciation: /-ˈfɪtɪk/ adjective sporophyte in other Oxford dictionaries Definition of sporophyte in the US English dictionary