APYROUS
Dictionary of Science, Literature and Art · 1842 · p. 3
(Yunanca köken — orijinale bakınız.) A term formerly applied to substances which resisted a strong heat without change. [s. 82]
Bu kavram başka kaynaklarda da geçiyor
The American Dictionary and Cyclopedia (1910)
An Illustrated Encyclopaedic Medical Dictionary (1891)
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