air-filled
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Air gap — (Physics) An air filled gap in a magnetic or electric circuit; specif., in a dynamo or motor, the space between the field magnet poles and the armature; clearance. [Webster 1913 Suppl.] … The Collaborative International Dictionary of English
air sac — n ALVEOLUS (b) * * * 1. in birds, one of the air filled cavities connected with the air passages of the lungs and usually with cavities in the bones; they assist in respiration and lower the body s specific gravity. Domestic fowl have one or two… … Medical dictionary
air bladder — air′ blad der n. 1) a vesicle or sac containing air 2) ich an air filled sac at the top of the body cavity in bony fishes, serving in most to regulate hydrostatic pressure Also called swim bladder • Etymology: 1725–35 … From formal English to slang
air vesicle — air′ ves icle n. bot a large, air filled pocket occurring chiefly in plants that float on water, as kelps … From formal English to slang
air bladder — ► NOUN ▪ an air filled bladder or sac found in certain animals and plants … English terms dictionary
air cylinder — n. an air filled cylinder, esp. one fitted with a piston for absorbing the recoil of a gun … English World dictionary
air sac — n. any of the air filled cavities in a bird s body, having connections to the lungs … English World dictionary
air sac — noun 1. a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways • Syn: ↑alveolus, ↑air cell • Derivationally related forms: ↑alveolate (for: ↑alveolus) • Hypernyms … Useful english dictionary
air sac — 1. a sac containing air. 2. alveolus (def. 2). 3. any of certain cavities in a bird s body connected with the lungs. 4. a saclike dilation of the wall of a trachea in many insects. [1820 30] * * * ▪ anatomy any of the air filled extensions… … Universalium
air spring — A high pressure air filled spring used in the suspension fork of some bicycles. See air bellows air suspension … Dictionary of automotive terms
