propylammonium
(aviation) a propeller-driven airliner
In a cavernous manner; like a cavern. / In a cavernous manner; sounding deep, hollow, or echoey.
(organic chemistry) The cation formed by protonation of propylamine; any of its derivatives
(paleontology, archaic) Any fossil foraminifer of the family Rotaliidae, abundant in chalk formations.
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