bulb 音标拼音: [b'ʌlb]
n . 灯泡;球状物
灯泡;球状物
bulb 灯泡
bulb 灯泡
bulb n 1 :
a modified bud consisting of a thickened globular underground stem serving as a reproductive structure 2 :
electric lamp consisting of a transparent or translucent glass housing containing a wire filament (
usually tungsten )
that emits light when heated by electricity [
synonym : {
light bulb }, {
lightbulb }, {
bulb }, {
incandescent lamp }, {
electric light }, {
electric -
light bulb }]
3 :
a rounded part of a cylindrical instrument (
usually at one end ); "
the bulb of a syringe "
4 :
anything with a round shape resembling a teardrop 5 :
lower or hindmost part of the brain ;
continuous with spinal cord ; (`
bulb '
is an old term for medulla oblongata ); "
the medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning " [
synonym : {
medulla oblongata }, {
medulla }, {
bulb }]
6 :
a rounded dilation or expansion in a canal or vessel or organ Bulb \
Bulb \,
v .
i .
To take the shape of a bulb ;
to swell .
[
1913 Webster ]
Bulb \
Bulb \ (
b [
u ^]
lb ),
n . [
L .
bulbus ,
Gr .
bolbo `
s :
cf .
F .
bulbe .]
1 . (
Bot .)
A spheroidal body growing from a plant either above or below the ground (
usually below ),
which is strictly a bud ,
consisting of a cluster of partially developed leaves ,
and producing ,
as it grows ,
a stem above ,
and roots below ,
as in the onion ,
tulip ,
etc .
It differs from a corm in not being solid .
[
1913 Webster ]
2 . (
Anat .)
A name given to some parts that resemble in shape certain bulbous roots ;
as ,
the bulb of the aorta .
[
1913 Webster ]
{
Bulb of the eye },
the eyeball .
{
Bulb of a hair },
the "
root ,"
or part whence the hair originates .
{
Bulb of the spinal cord },
the medulla oblongata ,
often called simply bulb .
{
Bulb of a tooth },
the vascular and nervous papilla contained in the cavity of the tooth .
[
1913 Webster ]
3 .
An expansion or protuberance on a stem or tube ,
as the bulb of a thermometer ,
which may be of any form ,
as spherical ,
cylindrical ,
curved ,
etc . --
Tomlinson .
[
1913 Webster ]
3 .
a {
light bulb }.
[
1913 Webster ]
96 Moby Thesaurus words for "
bulb ":
ball ,
balloon ,
bilge ,
bladder ,
blain ,
bleb ,
blister ,
blob ,
boll ,
bolus ,
boss ,
bow ,
bubble ,
bulbil ,
bulblet ,
bulge ,
bulla ,
bump ,
bunch ,
burl ,
button ,
cahot ,
chine ,
clump ,
condyle ,
convex ,
corm ,
dowel ,
ear ,
ellipsoid ,
flange ,
flap ,
gall ,
geoid ,
globe ,
globelet ,
globoid ,
globule ,
glomerulus ,
gnarl ,
gob ,
gobbet ,
handle ,
hill ,
hump ,
hunch ,
jog ,
joggle ,
knob ,
knot ,
knur ,
knurl ,
lip ,
loop ,
lump ,
mole ,
mountain ,
nevus ,
nub ,
nubbin ,
nubble ,
oblate spheroid ,
orb ,
orbit ,
orblet ,
papilloma ,
peg ,
pellet ,
prolate spheroid ,
radicle ,
radix ,
rhizome ,
rib ,
ridge ,
ring ,
rondure ,
root ,
rootstock ,
shoulder ,
sphere ,
spheroid ,
spherule ,
spine ,
stud ,
style ,
tab ,
tap ,
taproot ,
tuber ,
tubercle ,
tubercule ,
verruca ,
vesicle ,
wale ,
wart ,
welt
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