the last segment or an appendage on the last segment of the body of crustaceans and arachnids
WordReference Random House Unabridged Dictionary of American English © 2025
tel•son
(tel′sən),USA pronunciation n.
tel•son•ic
(tel son′ik),USA pronunciation adj.
- Invertebratesthe last segment, or an appendage of the last segment, of certain arthropods, as the middle flipper of a lobster's tail.
- Greek télson boundary, limit
- 1850–55;
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'telson' also found in these entries (note: many are not synonyms or translations):