eburinn.
/ˈiːbjʊərɪn/ ‘A substance obtained by subjecting a mixture of ivory or bone dust with albumen or ox blood to great pressure at a high temperature. It is very hard, and is a non-conductor of electricity’ ( New Sydenham Soc. Lexicon).
This entry has not yet been fully updated (first published 1891; most recently modified version published online January 2018).
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n.