Definition of Oocystaceae
: a family of free-floating green algae (order Chlorococcales) which are unicellular or colonial with an indefinite number of cells and in which the cells are often retained within the distended gelatinized wall of the old mother cell
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Origin and Etymology of oocystaceae
New Latin, from Oöcystis, type genus (from o- + -cystis) + -aceae
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