tosphre1016gy

[Gr. osphresis a smell. oxide, OsO; sesquioxide of osmium, Os203; osmic oxide, OsO; osmious anhydride, OsO3; and osmic acid, OsO4. The first three form salts with acids, the fourth is a weak acid, and the fifth is usually regarded as an acid, but its salts are very unstable. öş-mom-ě-tër, subst . [Gr. ōsmos =impulse, and metron a measure.) An apparatus for exhibiting the force of osmotic action, by which liquids are impelled through a moist membrane, illustrating the phenomena of endosmose and exomose. The apparatus consists of a porous ve el or sac containing a saline solution and plunged in pure water.