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diatom n. 矽藻类 矽藻类 diatom n 1: microscopic unicellular marine or freshwater colonial alga having cell walls impregnated with silica Diatom \Di"a*tom\ (d[imac]`[.a]*t[o^]m), n. [Gr. dia`tomos cut
in two. See {Diatomous}.] 1. (Bot.) One of the {Diatomace[ae]}, a family of minute unicellular Alg[ae] having a siliceous covering of great delicacy, each individual multiplying by spontaneous division. By some authors diatoms are called {Bacillari[ae]}, but this word is not in general use. [1913 Webster] 2. A particle or atom endowed with the vital principle. [1913 Webster] The individual is nothing. He is no more than the diatom, the bit of protoplasm. --Mrs. E. Lynn Linton. [1913 Webster]
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