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Definition of spiral
Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of spiral is as below...
Spiral
(a.) A plane
curve,
not
reentrant,
described
by a
point,
called
the
generatrix,
moving
along a
straight
line
according
to a
mathematical
law, while the line is
revolving
about a fixed point
called
the pole. Cf.
Helix..
Lern More About Spiral
☛ Wiki Definition of Spiral
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☛ Google Search for Spiral
Cochlea
::
Cochlea
(n.) An
appendage
of the
labyrinth
of the
internal
ear, which is
elongated
and
coiled
into a
spiral
in
mammals.
See Ear..
Screw
::
Screw (n.) A
cylinder,
or a
cylindrical
perforation,
having
a
continuous
rib,
called
the
thread,
winding
round it
spirally
at a
constant
inclination,
so as to leave a
continuous
spiral
groove
between
one turn and the next, -- used
chiefly
for
producing,
when
revolved,
motion
or
pressure
in the
direction
of its axis, by the
sliding
of the
threads
of the
cylinder
in the
grooves
between
the
threads
of the
perforation
adapted
to it, the
former
being
distinguished
as the
external,
or male
screw,
or,
Curl
::
Curl (v. i.) To move in
curves,
spirals,
or
undulations;
to
contract
in
curving
outlines;
to bend in a
curved
form; to make a curl or
curls..
Heterodromous
::
Heterodromous
(a.)
Having
spirals
of
changing
direction.
Spink
::
Spinii-spirulate
(a.)
Having
spines
arranged
spirally.
See
Spicule.
Lituus
::
Lituus
(n.) A
spiral
whose polar
equation
is r2/ = a; that is, a curve the
square
of whose
radius
vector
varies
inversely
as the angle which the
radius
vector
makes with a given
line..
Vertigo
::
Vertigo
(n.) Any one of
numerous
species
of small land
snails
belonging
to the genus
Vertigo,
having
an
elongated
or
conical
spiral
shell and
usually
teeth in the
aperture..
Gyroidal
::
Gyroidal
(a.)
Spiral
in
arrangement
or
action.
Taenidium
::
Taenidium
(n.) The
chitinous
fiber
forming
the
spiral
thread
of the
tracheae
of
insects.
See
Illust.
of
Trachea.
Twisted
::
Twisted
(a.)
Contorted;
crooked
spirally;
subjected
to
torsion;
hence,
perverted..
Spite
::
Spit curl () A
little
lock of hair,
plastered
in a
spiral
form on the
temple
or
forehead
with
spittle,
or other
adhesive
substance..
Corkscrew
::
Corkscrew
(n.) An
instrument
with a screw or a steel
spiral
for
drawing
corks from
bottles.
Dextrorse
::
Dextrorse
(a.)
Turning
from the left to the
right,
in the
ascending
line, as in the
spiral
inclination
of the stem of the
common
morning-glory..
Anisopleura
::
Anisopleura
(n. pl.) A
primary
division
of
gastropods,
including
those
having
spiral
shells.
The two sides of the body are
unequally
developed..
Volution
::
Volution
(n.) A
spiral
turn or
wreath.
Coil
::
Coil (n.) A ring,
series
of
rings,
or
spiral,
into which a rope, or other like
thing,
is
wound..
Screw
::
Screw (n.)
Specifically,
a kind of nail with a
spiral
thread
and a head with a nick to
receive
the end of the
screw-driver.
Screws
are much used to hold
together
pieces
of wood or to
fasten
something;
--
called
also wood
screws,
and screw
nails.
See also Screw bolt,
below..
Scutibranchiata
::
Scutibranchiata
(n. pl.) An order of
gastropod
Mollusca
having
a heart with two
auricles
and one
ventricle.
The shell may be
either
spiral
or
shieldlike.
Serpula
::
Serpula
(n.) Any one of
numerous
species
of
tubicolous
annelids
of the genus
Serpula
and
allied
genera
of the
family
Serpulidae.
They
secrete
a
calcareous
tube, which is
usually
irregularly
contorted,
but is
sometimes
spirally
coiled.
The worm has a
wreath
of
plumelike
and often
bright-colored
gills
around
its head, and
usually
an
operculum
to close the
aperture
of its tube when it
retracts..
Snake
::
Snake (v. t.) To wind round
spirally,
as a large rope with a
smaller,
or with cord, the small rope lying in the
spaces
between
the
strands
of the large one; to
worm..
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