Definition of free cell formation
: a process of cell formation that is frequent in endosperm development and in spore formation in many fungi (especially ascomycetes) and in which successive nuclear divisions are followed by the nuclei each appropriating a portion of cytoplasm and usually simultaneously becoming invested with a cell wall and leaving a surplus of cytoplasm — compare cleavage sense 4c, epiplasm
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Merriam-Webster unabridged
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