a brand of underwater breathing apparatus for a swimmer or skin-diver, consisting of a cylinder of compressed air that is strapped to the back, a flexible tube connecting the cylinder with the swimmer’s mouth, and an automatic pressure regulator that controls the flow of air into the lungs.
a transparent, light-blue or greenish-blue variety of beryl, used as a gem. light blue-green or greenish blue. Historical Examples aquamarine, which is feebly doubly refracting, separates them but slightly. A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public Frank Bertram Wade Topaz and aquamarine occur in hollows in the granite of the Mournes. […]
an abnormal fear of water; hydrophobia. noun an abnormal fear of water, esp because of the possibility of drowning Compare hydrophobia (sense 2) aquaphobia aq·ua·pho·bi·a (āk’wə-fō’bē-ə) n. An abnormal fear of water.
a board that skims over water when towed at high speed by a motorboat, used to carry a rider in aquatic sports. to ride an aquaplane. (def 7). Historical Examples In a nutshell, what had occurred was this: You know how you aquaplane. Right Ho, Jeeves P. G. Wodehouse noun a single board on which […]
- Aqua pura
pure water. Historical Examples Medical attendance was called, and I passed the night in a bath of attar of roses delicately medicated with aqua pura. Continental Monthly, Vol. III, No IV, April 1863 Various “You see I’m not afraid to risk a dip in the aqua pura,” he said. The Outdoor Girls on Pine Island […]