airˈ-cavity or airˈ-cell noun (botany)
An intercellular space containing air
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Main Entry:air

Useful english dictionary. 2012.

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  • air-cell — airˈ cavity or airˈ cell noun (botany) An intercellular space containing air • • • Main Entry: ↑air …   Useful english dictionary

  • Cavity wall insulation — is used to reduce heat loss through a cavity wall by filling the air space with a porous material. This immobilises the air within the cavity (air is still the actual insulator), preventing convection, and can substantially reduce space heating… …   Wikipedia

  • Air cell — 1. (Bot.) A cavity in the cellular tissue of plants, containing air only. [1913 Webster] 2. (Anat.) A receptacle of air in various parts of the system; as, a cell or minute cavity in the walls of the air tubes of the lungs; the air sac of birds;… …   The Collaborative International Dictionary of English

  • air cell — n a cavity or receptacle for air esp ALVEOLUS (b) * * * 1. any minute bodily chamber filled with air, such as an alveolus of the lung. 2. a cavity containing air and surrounded by a bodily structure, usually one of the bones of the head, such as… …   Medical dictionary

  • Air chamber — Air cham ber 1. A chamber or cavity filled with air, in an animal or plant. [1913 Webster] 2. A cavity containing air to act as a spring for equalizing the flow of a liquid in a pump or other hydraulic machine. [1913 Webster] …   The Collaborative International Dictionary of English

  • air bladder — air blad der 1. (Anat.) An air sac, sometimes double or variously lobed, in the visceral cavity of many fishes. It originates in the same way as the lungs of air breathing vertebrates, and in the adult may retain a tubular connection with the… …   The Collaborative International Dictionary of English

  • air|space — air space, 1. any more or less enclosed area or cavity containing air. 2. any gas filled space found in the tissues of plants. air|space «AIR SPAYS», noun. 1. space in the air, especially above a particular section of the earth: »China protested… …   Useful english dictionary

  • air sinus — n an air containing cavity (as a paranasal sinus and esp. a maxillary sinus) in bone * * * an air containing space within the substance of a bone …   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 cell — air′ cell n. bot zool. anat. a cavity or receptacle of the body that contains air …   From formal English to slang