Definition of Helix
He´lix
n.
1.
(Geom.)
A
nonplane
curve
whose
tangents
are
all
equally
inclined
to
a
given
plane
.
The
common
helix
is
the
curve
formed
by
the
thread
of
the
ordinary
screw
.
It
is
distinguished
from
the
spiral
,
all
the
convolutions
of
which
are
in
the
plane
.
2.
(Arch.)
A
caulicule
or
little
volute
under
the
abacus
of
the
Corinthian
capital
.
3.
(Anat.)
The
incurved
margin
or
rim
of
the
external
ear
.
See
Illust.
of
Ear
.
4.
(Zool.)
A
genus
of
land
snails
,
including
a
large
number
of
species
.
Related Words
cirrus
,
coil
,
corkscrew
,
curl
,
curlicue
,
evolute
,
gyre
,
involute
,
kink
,
ringlet
,
roll
,
screw
,
scroll
,
spiral
,
swirl
,
tendril
,
twirl
,
twist
,
volute
,
volution
,
vortex
,
whirl
,
whorl
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