Definition for A-PY'ROUS

A-PY'ROUS, a. [Gr. απυρος, α privative and πυρ, fire.]

Incombustible, or that sustains a strong heat without alteration of form or properties. Apyrous bodies differ from those simply refractory. Refractory bodies can not be fused by heat, but may be altered. – Encyc.

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