[ahr-kuh-spawr, -spohr]
noun Botany.
the primitive cell, or group of cells, that give rise to the cells from which spores are derived.

1900–05; arche- + spore

archesporial, adjective
subarchesporial, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
archespore or archesporium (ˈɑːkɪˌspɔː, ˌɑːkɪˈspɔːrɪəm)
n , pl -spores, -sporia
botany the cell or group of cells in a sporangium that gives rise to spores
archesporium or archesporium (ˈɑːkɪˌspɔː, ˌɑːkɪˈspɔːrɪəm, -ˈspɔːrɪə)
arche'sporial or archesporium

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