ˈärkə̇ˌspō(ə)r noun
or ar·che·spo·ri·um ˌ ̷ ̷ ̷ ̷ˈspōrēəm
( plural arche·spores -rz ; or archespo·ria -ōrēə)
Etymology: New Latin archesporium, from arche- + -sporium
: the cell or group of cells from which spore mother cells develop (as those from which the microspores develop in the pollen sac or the megaspore in the ovule
• ar·che·spo·ri·al | ̷ ̷ ̷ ̷|spōrēəl adjective