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penta-
[penta- 词源字典]
word-forming element meaning "five, containing five," from Greek
penta-
(before a vowel
pent-
), comb. form of
pente
"five," related to Aeolian
pempte
(see
five
), with
-a-
by analogy of
hepta-
,
ennea-
,
deka-
.
[penta- etymology, penta- origin, 英语词源]