streak


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streak

 [strēk]
a line, stria, or stripe.
angioid s's red to black irregular bands in the ocular fundus running outward from the optic disk.
primitive streak a faint white trace at the caudal end of the embryonic disk, formed by movement of cells at the onset of mesoderm formation, providing the first evidence of the embryonic axis. It eventually undergoes degenerative changes and disappears.

streak

(strēk),
A line, stria, or stripe, especially one that is indistinct or evanescent.
[A.S. strica]

streak

(strēk) a line, stria, or stripe.
angioid streaks  red to black irregular bands in the ocular fundus running outward from the optic disk.
fatty streak  a small, flat, yellow-gray area, composed mainly of cholesterol, in an artery; possibly an early stage of atherosclerosis.
meningitic streak  tache cérébrale.
Moore's lightning streaks  vertical flashes of light sometimes seen on the peripheral side of the field of vision when the eyes are moved, a benign condition.
primitive streak  a faint white trace at the caudal end of the embryonic disc, formed by movement of cells at the onset of mesoderm formation and providing the first evidence of the embryonic axis.

streak

(strēk)
n.
1. A line, mark, smear, or band differentiated by color or texture from its surroundings.
2. Microbiology A sample of microorganisms that has been introduced into a solid culture medium by a needle drawn across its surface.
v. streaked, streaking, streaks
v.tr.
Microbiology To inoculate (a culture medium) with a streak.

streak′er n.

streak

Etymology: AS, strican, to stroke
a line or a stripe, such as the primitive streak at the caudal end of the embryonic disk.

streak

(strēk)
A line, stria, or stripe, especially one that is indistinct or evanescent.
[A.S. strica]

streak

(strēk)
A line, stria, or stripe, especially one that is indistinct or evanescent.
[A.S. strica]

streak

a line or stripe.

angioid s's
red to black irregular bands in the ocular fundus running outward from the optic disk.
streak canal
the papillary duct, the canal between the exterior and the lactiferous sinus within the teat of a ruminant.
primitive streak
a faint white trace at the caudal end of the embryonic disk, formed by movement of cells at the onset of mesoderm formation, providing the first evidence of the embryonic axis.
References in classic literature ?
He was quite willing to satisfy our curiosity, and in a few minutes we learned that the Streak had come in after dark from San Francisco; that this was what might be called the trial trip; and that she was the property of Silas Tate, a young mining millionaire of California, whose fad was high-speed yachts.
Well, this little yellow streak has the gall to blow in to-day and say he'll take Carthey's place.
The streak of chalk bewitcheth the hen; the stroke he struck bewitched his weak reason.
If only some hand," he remarked, "could plant dynamite below that streak of white, so that the sea could disgorge its dead
12 was half open, and there came out into the streak of light thick fumes of cheap, poor tobacco, and the sound of a voice, unknown to Levin; but he knew at once that his brother was there; he heard his cough.
The puritan streak in her training was astonished and shocked by some of the broadness; but she refused to sit in judgment.
The east was pink with the dawn and long streaks of light climbed into the sky where a few stars still shone.
The frock was quite dry, and in truth it had been helped a little by aunt Sarah's ministrations; but the colors had run in the rubbing, the pattern was blurred, and there were muddy streaks here and there.
This even tint was indeed broken up by streaks of yellow sand-break in the lower lands, and by many tall trees of the pine family, out-topping the others--some singly, some in clumps; but the general colouring was uniform and sad.
On the horizon fine streaks of cirrhous clouds were succeeded by masses of cumuli.
Above, the sky would be of a cold blue colour, save for a fringe of flame-coloured streaks on the horizon that kept turning ever paler and paler; and when the moon had come out there would be wafted through the limpid air the sounds of a frightened bird fluttering, of a bulrush rubbing against its fellows in the gentle breeze, and of a fish rising with a splash.
said I) How charmingly is the azure varied by those delicate streaks of white