Definition of massula
1 : a coherent mass of pollen grains (as in certain orchids) developed from a single pollen mother cell
2 : a hardened layer of cytoplasm formed around the maturing microspore in some heterosporous ferns (as of the genus Azolla)
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Origin and Etymology of massula
New Latin, from Latin, small mass, from massa lump, mass + -ula — more at mass
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