[mahy-kruh-spawr-uh-fil, -spohr-]
noun Botany.
a leaflike organ bearing microsporangia.

1890–95; micro- + sporophyll

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World English Dictionary
microsporophyll (ˌmaɪkrəʊˈspɔːrəfɪl)
Compare megasporophyll a leaf on which the microspores are formed: corresponds to the stamen of a flowering plant
[C19: from micro- + sporophyll]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
microsporophyll   (mī'krə-spôr'ə-fĭl')  Pronunciation Key 
A leaflike structure that bears microsporangia, such as those of in the strobili of lycophytes or in the male cones of conifers. The stamens of flowering plants are highly modified microsporophylls.
The American Heritage® Science Dictionary
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