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oxyhydroxide
oxyhydroxide n.
Brit. 
/ˌɒksɪhʌɪˈdrɒksʌɪd/
, /ˌɒksɪhʌɪˈdrɒksʌɪd/U.S. /ˌɑksiˌhaɪˈdrɑkˌsaɪd/
a complex containing an oxide group and a hydroxide group./ˌɑksiˌhaɪˈdrɑkˌsaɪd/ΚΠ
1950 Jrnl. Amer. Chem. Soc. 72 3553/2 The oxyhydroxide of manganese, MnOOH, (manganite) was..previously reported from this laboratory.
1997 Key Engin. Materials 132 264 The crystallization of precipitates obtained by the hydrolysis of zirconium alkoxide yield to the formation of large crystalline domains..of oxyhydroxide compounds.
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