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单词
cissoid
释义
WordReference Random House Unabridged Dictionary of American English © 2024
cis•soid
(sis
′
oid),
USA pronunciation
n.
[
Geom.
]
Mathematics
a curve having a cusp at the origin and a point of inflection at infinity. Equation:
r
= 2
a
sinθtanθ.
Greek
kissoeidé̄s,
equivalent. to
kiss
(
ós
) ivy +
-oeidēs
-
oid
1650–60
cis•soi
′
dal
,
adj.
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stephen i
stephen ii
stephen iii
stephen iv
stephen ix
stephens
stephenson
stephen v
stephen vi
stephen vii
stephen viii
stephenville
step in
step-in
stepladder
stepless
steplike
stepmother
stepmotherliness
stepmotherly
stepney
step-off
step on
step-on
step out
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更新时间:2025/11/13 6:21:30