air-chambered

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• air chamber — noun : a cavity filled with air: as a. : a cavity containing air to act by its elasticity as a spring for equalizing the flow of a liquid in a pump or other hydraulic machine see hydraulic ram illustration b. : one of the chambers in the nautilus …   Useful english dictionary

• chambered nautilus — noun A marine mollusc, of the family Argonautidae native to the Pacific Ocean and Indian Ocean, which has tentacles and a spiral shell with a series of air filled chambers. He was still prepared to go on collecting all that life could offer, like …   Wiktionary

• air bladder — gas bladder, the preferable term since the composition of gases may not be identical to that of air (a thin membranous, sometimes alveolated sac in the dorsal portion of the abdominal cavity. Composed of three layers, the tunica externa, the… …   Dictionary of ichthyology

• air sac — gas bladder, a thin membranous, sometimes alveolated sac in the dorsal portion of the abdominal cavity. Contains a varying mixture of gases, not identical to the composition of air. May be one, two or three chambered. May be connected to the gut… …   Dictionary of ichthyology

• Physiology of dinosaurs — Note: In this article dinosaur means non avian dinosaur, since most experts regard birds as an advanced group of dinosaurs. The physiology of dinosaurs has historically been a controversial subject, particularly thermoregulation. Recently, many… …   Wikipedia

• M1919 Browning machine gun — Gun, Machine, Caliber .30, Browning, M1919A4 Type Medium machine gun Place of origin  United States …   Wikipedia

• photoreception — photoreceptive, adj. /foh toh ri sep sheuhn/, n. the physiological perception of light. [1905 10; PHOTO + RECEPTION] * * * Biological responses to stimulation by light, most often referring to the mechanism of vision. In one celled organisms such …   Universalium

• M1911 pistol — United States Pistol, Caliber .45, M1911 M1911A1 pistol manufactured by Remington Rand Type Semi automatic pistol …   Wikipedia

• small arm — small armed, adj. Usually, small arms. a firearm designed to be held in one or both hands while being fired: in the U.S. the term is applied to weapons of a caliber of up to one in. (2.5 cm). [1680 90] * * * ▪ military technology Introduction… …   Universalium

• SIG Sauer P226 — SIG P226 SIG Sauer P226 in .40 S W Type Semi automatic pistol Place of origin …   Wikipedia