pleon

[ plee-on ]

/ ˈpli ɒn /

the abdomen of a crustacean.

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Question 1 of 10

orchard

1850–55; noun use of Greek pléōn, present participle of pleîn to swim, sail; see pleopod

ple·on·al

[plee-uh-nl] /ˈpli ə nl/, ple·on·ic, adjective

Telson, tel′son, n. the last somite of the pleon or abdomen of certain crustaceans and arachnidans.
Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements)|Various
This tribe has the pleon dwindled into insignificance, whereas in the other two tribes it is powerfully developed.
Encyclopaedia Britannica, 11th Edition, Volume 17, Slice 4|Various
The abdomen or pleon carries the remaining six pairs, of which from three to five are called pleopods and the remainder uropods.
Encyclopaedia Britannica, 11th Edition, Volume 17, Slice 4|Various