air vacuole

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• Vacuole — Vac u*ole, n. [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. [1913… …   The Collaborative International Dictionary of English

• vacuole — [vak′yo͞o ōl΄] n. [Fr < L vacuus, empty] Biol. a fluid filled cavity within the cytoplasm of a cell, surrounded by a membrane that usually encloses food, water, or air vacuolar [vak′yo͞o wə lər, vak΄yoo wō′lər] adj …   English World dictionary

• vacuole — noun Etymology: French, literally, small vacuum, from Latin vacuum Date: 1853 1. a small cavity or space in the tissues of an organism containing air or fluid 2. a cavity or vesicle in the cytoplasm of a cell usually containing fluid see cell… …   New Collegiate Dictionary

• vacuole — 1. A minute space in any tissue. 2. A clear space in the substance of a cell, sometimes degenerative in character, sometimes surrounding an englobed foreign body and serving as a temporary cell stomach for the digestion of the …   Medical dictionary

• vacuole — n. Biol. a tiny space within the cytoplasm of a cell containing air, fluid, food particles, etc. Derivatives: vacuolar adj. vacuolation n. Etymology: F, dimin. of L vacuus empty …   Useful english dictionary

• Contractile vacuole — Vacuole Vac u*ole, n. [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 …   The Collaborative International Dictionary of English

• Food vacuole — Vacuole Vac u*ole, n. [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 …   The Collaborative International Dictionary of English

• Life Sciences — ▪ 2009 Introduction Zoology       In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …   Universalium

• angiosperm — /an jee euh sperrm /, n. Bot. a plant having its seeds enclosed in an ovary; a flowering plant. Cf. gymnosperm. [ANGIO + SPERM] * * * ▪ plant Introduction       any member of the more than 300,000 species of flowering plants (division Anthophyta) …   Universalium

• cell — cell1 cell like, adj. /sel/, n. 1. a small room, as in a convent or prison. 2. any of various small compartments or bounded areas forming part of a whole. 3. a small group acting as a unit within a larger organization: a local cell of the… …   Universalium

• Sulfur assimilation — Sulfate reduction and assimilation in plants (APS, adenosine 5 phosphosulfate; Fdred, Fdox, reduced and oxidized ferredoxin; RSH, RSSR, reduced and oxidized glutathione)|right|325pxSulfur is an essential element for growth and physiological… …   Wikipedia