| 单词 | di-tetrahedron | 
| 释义 | > as lemmasdi-tetrahedron  1.   Entering into numerous English words, mostly technical, as dichromic, dicotyledon, digamma, digamy, diglot, digraph, dilemma, diphthong, diptych, distich, disyllable; also in the nomenclature of Natural History as Diadelphia, Diandria, Didelphia, Diptera: which see in their alphabetical places. So in Crystallography, as in  di-tetrahedron a crystal having twice four sides or planes; so  di-hexahedron, etc. < as lemmas  | 
	
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