a. [ Micro- + acoustic: cf. F. microcoustique, micracoustique. ] Pertaining, or suited, to the audition of small sounds; fitted to assist hearing. [ 1913 Webster ]
{ } a. [ Cf. F. microcosmique. ] Of or pertaining to the microcosm. [ 1913 Webster ]
Microcosmic salt (Chem.), a white crystalline substance obtained by mixing solutions of sodium phosphate and ammonium phosphate, and also called hydric-sodic-ammonic-phosphate. It is a powerful flux, and is used as a substitute for borax as a blowpipe reagent in testing for the metallic oxides. Originally obtained by the alchemists from human urine, and called sal microcosmicum. [ 1913 Webster ]
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