noun
: a cell that remains after one or more vegetative or prothallial cells are cut off from the microspore and that gives rise to tube and generative cells of the male gametophyte of gymnosperms
noun
: a cell that remains after one or more vegetative or prothallial cells are cut off from the microspore and that gives rise to tube and generative cells of the male gametophyte of gymnosperms
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012