bud

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bud

 [bud]
1. a structure on a plant, often round, that encloses an undeveloped flower or leaf.
2. something resembling the bud of a plant, especially a protuberance in the embryo from which an organ or part develops.
end bud the remnant of the embryonic primitive knot, from which arises the caudal part of the trunk.
limb bud one of the four lateral swellings appearing in vertebrate embryos, which develop into the two pairs of limbs.
tail bud
the primordium of the caudal appendage.
taste b's end organs of the gustatory nerve containing the receptor surfaces for the sense of taste.
ureteric bud a dorsal outgrowth of the mesonephric duct near its entry into the cloaca; it is the primordium of the ureter, renal pelvis, calices, and collecting tubules of the kidneys.
bud of urethra bulb of urethra.

bud

(bŭd),
1. An outgrowth that resembles the bud of a plant, usually pluripotential, and capable of differentiating and growing into a definitive structure.
See also: gemmation.
2. To give rise to such an outgrowth.
See also: gemmation.
3. A small outgrowth from a parent cell; a form of asexual reproduction.

bud

(bud)
1. a structure on a plant, often round, that encloses an undeveloped flower or leaf.
2. any small part of the embryo or adult metazoon more or less resembling the bud of a plant and presumed to have potential for growth and differentiation.

end bud  caudal eminence.
limb bud  a swelling on the trunk of an embryo that becomes a limb.
periosteal bud  vascular connective tissue from the periosteum growing through apertures in the periosteal bone collar into the cartilage matrix of the primary center of ossification.
tail bud 
1. in animals having a tail, the primordium that forms it.
taste bud  one of the end organs of the gustatory nerve containing the receptor surfaces for the sense of taste.
ureteric bud  an outgrowth of the mesonephric duct giving rise to all but the nephrons of the permanent kidney.

bud

(bŭd)
n.
1. Botany
a. A small protuberance on a stem or branch, sometimes enclosed in protective scales and containing an undeveloped leaf, flower, or leafy shoot.
b. The stage or condition of having buds: branches in full bud.
2. Biology
a. An asexual reproductive structure, as in yeast or a hydra, that consists of an outgrowth capable of developing into a new individual.
b. A small, rounded organic part, such as a taste bud, that resembles a plant bud.
v. budded, budding, buds
v.intr.
1. To put forth or produce buds: a plant that buds in early spring.
2. To reproduce asexually by forming a bud.

bud′der n.

bud

Etymology: ME, budde
any small outgrowth that is the beginning stage of a living structure, as a limb bud from which an upper or lower limb develops.

bud

Botany
A small swelling or projection on a plant, from which a shoot, cluster of leaves or flowers develop; a rudimentary, undeveloped shoot, leaf or flower.

Drug slang
A regional term for marijuana.

Embryology
See Syncytial bud.

bud

(bŭd)
1. An outgrowth that resembles the bud of a plant, usually pluripotential, and capable of differentiating and growing into a definitive structure.
2. To give rise to such an outgrowth.
See also: gemmation
3. A small outgrowth from a parent cell; a form of asexual reproduction.

bud

an undeveloped embryonic shoot in a plant containing a meristematic area (see MERISTEM) for cell division, surrounded by leaf primordia (immature leaves) with often an outer protective layer of scales formed from modified leaves. The tip of a twig usually carries a terminal bud, while leaves generally have a lateral bud in their AXILS.

bud

a structure resembling the bud of a plant, especially a protuberance in the embryo from which an organ or part develops.

end bud
the remnant of the embryonic primitive knot, from which arises the tail and caudal part of the trunk.
horn bud
bilateral cranial protuberances, destined to develop to a fighting horn or antler stage.
limb bud
one of the four lateral swellings appearing in vertebrate embryos, which develop into the two pairs of limbs.
tail bud
1. the primordium of the caudal appendage.
2. end bud.
taste b's
end organs of the gustatory nerve containing the receptor surfaces for the sense of taste.
ureteric bud
an outgrowth of the mesonephric duct giving rise to all but the nephrons of the permanent kidney.
bud of urethra
bulb of urethra.
References in classic literature ?
Fearsome-looking as they were, I did not know whether to fear them or not, for they did not seem to be particularly well equipped for fighting, and I was on the point of stepping from my hiding-place and revealing myself to them to note the effect upon them of the sight of a man when my rash resolve was, fortunately for me, nipped in the bud by a strange shrieking wail, which seemed to come from the direction of the bluffs at my right.
Girls, sometimes I feel as if those exams meant everything, but when I look at the big buds swelling on those chestnut trees and the misty blue air at the end of the streets they don't seem half so important.
Surprising as this union of separate individuals in common stock must always appear, every tree displays th same fact, for buds must be considered as individual plants It is, however, natural to consider a polypus, furnished wit a mouth, intestines, and other organs, as a distinct individual whereas the individuality of a leaf-bud is not easily realised so that the union of separate individuals in a common bod is more striking in a coralline than in a tree.
But I must not fly too boldly in the face of Providence, and have ordered those in the boxes to be taken into the greenhouse for the winter, and hope the Bouquet d'Or, in a sunny place near the glass, may be induced to open some of those buds.
The old grass looked greener, and the young grass thrust up its tiny blades; the buds of the guelder-rose and of the currant and the sticky birch-buds were swollen with sap, and an exploring bee was humming about the golden blossoms that studded the willow.
Bout three months ago my cousin Bud, fourteen year old, was riding through the woods on t'other side of the river, and didn't have no weapon with him, which was blame' foolishness, and in a lonesome place he hears a horse a-coming behind him, and sees old Baldy Shepherdson a-linkin' after him with his gun in his hand and his white hair a-flying in the wind; and 'stead of jumping off and taking to the brush, Bud 'lowed he could out- run him; so they had it, nip and tuck, for five mile or more, the old man a-gaining all the time; so at last Bud seen it warn't any use, so he stopped and faced around so as to have the bullet holes in front, you know, and the old man he rode up and shot him down.
Bud Dixon would wake up and miss the swag, and would come straight for us, for he ain't afeard of anything or anybody, that man ain't.
It grieved him to think that his little Alice, who was a flower bud fresh from paradise, must open her leaves to the rough breezes of the world, or ever open them in any clime.
The Northwest Company had made a second memorial to that government, representing Astoria as an American establishment, stating the vast scope of its contemplated operations, magnifying the strength of its fortifications, and expressing their fears that, unless crushed in the bud, it would effect the downfall of their trade.
Their business is to paint the colors of the flowers when they bud and bloom; but I brought the merry fellows along to see Oz, and they've left their paint-pots behind them.
sports' are extremely rare under nature, but far from rare under cultivation; and in this case we see that the treatment of the parent has affected a bud or offset, and not the ovules or pollen.
At first, indeed, she had seemed to take a pleasure in mortifying my vanity and crushing my presumption - relentlessly nipping off bud by bud as they ventured to appear; and then, I confess, I was deeply wounded, though, at the same time, stimulated to seek revenge; - but latterly finding, beyond a doubt, that I was not that empty-headed coxcomb she had first supposed me, she had repulsed my modest advances in quite a different spirit.