noun or·tho·silicate \¦ȯ(r)(ˌ)thō+\

Definition of orthosilicate

  1. :  a silicate containing the group SiO4 in which the ratio of silicon to oxygen is 1 to 4 :  a salt or ester (as ethyl silicate) of orthosilicic acid :  nesosilicate

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Origin and Etymology of orthosilicate

International Scientific Vocabulary orth- + silicate

Seen and Heard

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a brief usually trivial fact

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