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subtend (v.)
[subtend 词源字典]
1560s, from Latin
subtendere
"to stretch underneath," from
sub
"under" (see
sub-
) +
tendere
"to stretch" (see
tenet
). Related:
Subtended
;
subtending
.
[subtend etymology, subtend origin, 英语词源]
[subtend 词源字典]