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Tetrahedroid. World English Historical Dictionary - AI智能索引
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Tetrahedroid. World English Historical Dictionary

Tetrahedroid. World English Historical Dictionary Dictionary Biographies Literary Criticism Welcome Terms of Service ⧏ Previous Next ⧐ Contents Slice Contents Key Bibliographic Record Murray’s New English Dictionary. 1916, rev. 2022. Tetrahedroid a. and sb. [f. as prec. + -OID.] a. adj. Resembling or approaching the form of a tetrahedron. b. sb. Geom. The envelope of a quadric surface which touches eight given straight lines.

1 1889.  Cayley’s Math. Papers I. 587, note. The surface here considered, the Tetrahedroid, is the general homographic transformation of the wave surface.

2 1899.  Geog. Jrnl., March, 251. Causes, which … would go in the direction of producing tetrahedral, or tetrahedroid, deformation.

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