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isthmus (n.)
[isthmus 词源字典]
1550s, from Latin
isthmus
, from Greek
isthmos
"narrow passage, narrow neck of land," especially that of Corinth, of unknown origin, perhaps from
eimi
"to go" + suffix
-thmo
(compare
ithma
"a step, movement").
[isthmus etymology, isthmus origin, 英语词源]