| 单词 | vacuole |
| 释义 | vacuole[ vak-yoo-ohl ] / ˈvæk yuˌoʊl / SEE SYNONYMS FOR vacuole ON THESAURUS.COM noun Biology.a membrane-bound cavity within a cell, often containing a watery liquid or secretion. a minute cavity or vesicle in organic tissue. Origin of vacuoleFrom French, dating back to 1850–55; see origin at vacuum, -ole1 OTHER WORDS FROM vacuolevac·u·o·lar [vak-yoo-oh-ler, vak-yoo-uh-, vak-yuh-ler], /ˌvæk yuˈoʊ lər, ˈvæk yu ə-, ˈvæk yə lər/, adjectiveWords nearby vacuolevacua, vacuity, vacuolate, vacuolated, vacuolation, vacuole, vacuous, vacutome, vacuum, vacuum activity, vacuum aspiration Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for vacuoleBritish Dictionary definitions for vacuolevacuole / (ˈvækjʊˌəʊl) / nounbiology a fluid-filled cavity in the cytoplasm of a cell Derived forms of vacuolevacuolar, adjectivevacuolate (ˈvækjʊəlɪt, -ˌleɪt), adjectivevacuolation (ˌvækjʊəˈleɪʃən), nounWord Origin for vacuoleC19: 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 Medical definitions for vacuolevacuole [ văk′yōō-ōl′ ] n.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. Other words from vacuolevac′u•o′lar (-ō′lər, -lär′) adj.The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for vacuolevacuole [ văk′yōō-ōl′ ] 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. |
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