propulsive

[Lat. propulsus, pa. par. of propello to propel (q. v.).] Having power to propel; tending to propel; propellent. pro-pŭl-sör-ý, a. [English propuls (e); -ory.] The same as PROPULSIVE (q. v.). pro-pyl, s. [Eng. prop ( ionic ); -yl.] IMG:content-1625.png:[blocks in formation] Chem. C3H8O2=C3H6(OH)2. Tritylene glycol. Tritylenic alcohol. A colorle , syrupy liquid ob. tained by decomposing propylene dibromide with argentic acetate and saponifying by means of pot ash. It has a sweet taste, a specific gravity of 1'051 at 0°, a vapor density of 2.596, and boils at 188°. propylene-hydrate, s. [PROPYLIC-ALCOHOL.] prō-pyl-ic, a. [Eng. propyl; -ic.] Contained in or derived from propyl. propylic-alcohol, s. Chem. (pl.): C3H2O=C3H7OH. Primary propylic alcohol or ethyl carbinol is prepared by the repeated fractional distillation of that portion of fusel oil which distils between 85° and 100°. It may also be prepared synthetically, by acting upon propionic aldehyde with nascent hydrogen. It is a colorle , agreeable-smelling liquid; specific gravity, 812, boils at 97°, and is miscible with water. Secondary propylic alcohol, or dimethyl carbinol, is prepared by the action of sodium amalgam on aqueous acetone. It is a colorle liquid; specific gravity, *791, boils at 84°, and is miscible with water and alcohol. By oxidizing agents it is converted into acetone. prō-pyl-i-dene, s . [PROPYL.] Chem.: An unsaturated hydrocarbon dyad rad i. cal, isomeric with propylene, and having the for mule C3H6. propyl i dene-oxide, s . [PROPIONIC-ALDEHYDE.) pro-py-lite, s. [Pref. pro- ; Gr. pyle =a gate, and suff. -ite ( Petrol .).] Petrol.: A name given by Richthofen to a group of rocks which he regarded as the earliest volcanic rocks of the Tertiary period, and as po e ing a composition and structure distinct from related rocks of the same age. These are now shown to be altered andesites, both the mineralogical and chemical composition agreeing with the le altered varieties of the same geological age. prop-y-lăn, s. [Gr. propylon.] [PROPYLEUM.] Arch.: A gateway standing before the entrance of an Egyptian temple or portico.