- a membrane-bound cavity within a cell, often containing a watery liquid or secretion.
- a minute cavity or vesicle in organic tissue.
Origin of vacuole
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for vacuole
There is always one nucleus and one vacuole, but both may be more numerous.Marine Protozoa from Woods Hole
Gary N. Calkins
We have received the impression that we have here to deal with a vacuole filled with substance secreted by the cell.
The number of the vacuole containing cells is 15-20% of the colourless blood corpuscles.
At each end of the cell is a vacuole containing small granules that show an active dancing movement.Elements of Structural and Systematic Botany
Douglas Houghton Campbell
This is done by pulsation of the vacuole, which ultimately bursts, passing fluid waste to the outside.A Civic Biology
George William Hunter
- biology a fluid-filled cavity in the cytoplasm of a cell
C19: from French, literally: little vacuum, from Latin vacuum
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for vacuole
1853, from French vacuole, from Latin vacuus "empty" (see vacuum).
Online Etymology Dictionary, © 2010 Douglas Harper
- A small cavity in the cytoplasm of a cell, bound by a single membrane and containing water, food, or metabolic waste.
- A small space or cavity in a tissue.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- A cavity within the cytoplasm of a cell, surrounded by a single membrane and containing fluid, food, or metabolic waste. Vacuoles are found in the cells of plants, protists, and some primitive animals. In mature plant cells, there is usually one large vacuole which occupies a large part of the cell's volume and is filled with a liquid called cell sap. The cell sap stores food reserves, pigments, defensive toxins, and waste products to be expelled or broken down. In the cells of protists, however, there may be many small specialized vacuoles, such as digestive vacuoles for the absorption of captured food and contractile vacuoles for the expulsion of excess water or wastes. See more at cell.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.