Emily Dickinson Lexicon
Definition for THYS-AN-U'RANS
THYS-AN-U'RANS, n. [plur. Gr. θυσάνουρος, having a long bushy tail.]
An order of apterous insects, supported by six feet, that undergo no metamorphosis, and have, in addition, particular organs of motion, either on the sides, or at the extremity of the abdomen. Cuvier.
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