One of the mysteries of the English language finally explained.
The last segment in the abdomen, or a terminal appendage to it, in crustaceans, chelicerates, and embryonic insects.
- ‘The material comprises several partial specimens in addition to disarticulated carapaces, appendages, metastomas, opisthosomal segments, and telsons.’
- ‘They have a long, spike-like appendage called a telson that projects from the rear of their bodies.’
- ‘The postabdominal series is entire in this specimen, exhibiting a total count of nine segments plus the telson.’
- ‘In a similar way, setiferous appendages of the telson are found in a number of noncrustaceans.’
- ‘At the end of the abdomen is the telson, which bears a bulb-shaped structure containing the venom glands and a sharp, curved aculeus to deliver the venom.’
Mid 19th century: from Greek, literally ‘limit’.
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