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Webster 1913 Edition
Vacuole
Vac′u-ole
,Noun.
[L.
vacuus
empty: cf. F. vacuole
.] (Biol.)
A small air cell, or globular space, in the interior of organic cells, either containing air, or a pellucid watery liquid, or some special chemical secretions of the cell protoplasm.
Contractile vacuole
. (Zool.)
– Food vacuole
. (Zool.)