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contortionist
contour
contour feather
contour interval
contour line
contour map
contour plowing
contr.
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contra broker
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contractile vacuole
con·trac·tile vac·u·ole (plural con·trac·tile vac·u·oles)


noun 
Definition:
 
cell cavity that can contract: a membrane-surrounded cavity within a cell that regulates the water content of the cell by absorbing water and then contracting to expel it
Encarta® World English Dictionary [North American Edition] © & (P)2007 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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