osmiamicadj.
/ˌɒzmɪˈamɪk/, U.S. /ˌɑzmiˈæmɪk/ Chemistry.
osmiamic acid n. an acidic amide of osmium, Os(NH)O3, formed as a yellow aqueous solution by the reaction of osmic acid and ammonia and yielding salts with bases.
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osmic acid1842
osmiamic acid1852
1852 H. Watts in tr. L. Gmelin Hand-bk. Chem. VI. 414 Acids at ordinary temperatures exert no decomposing action on aqueous osmiamic acid.
1900 Science 6 July 30/1 Joly then found that the old osmiamic acid of Fritzsche and Struve is also to be considered as a nitroso compound.
1950 N. V. Sidgwick Chem. Elements II. 1508 Free osmiamic acid is known only in solution, which is yellow and keeps for days if it is dilute.
1991 Inorganica Chimica Acta 179 151/1 This compound was named nitridotechnetic(VI) acid on the basis of..a supposed relationship to nitridoosmic(VIII) acid, Os(N)O3H (‘osmiamic acid’).
This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022).
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adj.1852