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5 definitions found
From:
DICT.TW English-Chinese Dictionary 英漢字典
he·li·coid
/ˈhɛləˌkɔɪd, ˈhi-/
(
a
.)螺旋狀的,蝸牛殼狀的,迴轉式的螺旋體,螺旋面
From:
DICT.TW English-Chinese Medical Dictionary 英漢醫學字典
he·li·coid
/ˌhɛləˈkɔɪdḷ, ˌhɪlə-/
形容詞
From:
Taiwan MOE computer dictionary
helicoid
螺旋面
From:
Webster's Revised Unabridged Dictionary (1913)
Hel·i·coid
a.
1.
Spiral
;
curved
,
like
the
spire
of
a
univalve
shell
.
2.
Zool.
Shaped
like
a
snail
shell
;
pertaining
to
the
Helicidae
,
or
Snail
family
.
Helicoid parabola
Math.
,
the
parabolic
spiral
.
From:
Webster's Revised Unabridged Dictionary (1913)
Hel·i·coid
,
n.
Geom.
A
warped
surface
which
may
be
generated
by
a
straight
line
moving
in
such
a
manner
that
every
point
of
the
line
shall
have
a
uniform
motion
in
the
direction
of
another
fixed
straight
line
,
and
at
the
same
time
a
uniform
angular
motion
about
it
.
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