a long, narrow mark, smear, band of color, or the like: streaks of mud.
a portion or layer of something, distinguished by color or nature from the rest; a vein or stratum: streaks of fat in meat.
a vein, strain, or admixture of anything: a streak of humor.
a spell or run: a streak of good luck.
an uninterrupted series: The team had a losing streak of ten games.
a flash leaving a visible line or aftereffect, as of lightning; bolt.
Mineralogy. the line of powder obtained by scratching a mineral or rubbing it upon a hard, rough white surface, often differing in color from the mineral in the mass, and serving as an important distinguishing character.
Plant Pathology.
an elongated, narrow, superficial lesion on stems or leaf veins, becoming brown and necrotic.
any disease characterized by such lesions.
verb (used with object)
to mark with a streak or streaks; form streaks on: sunlight streaking the water with gold; frost streaking the windows.
to lighten or color (strands of hair) for contrastive effect.
to dispose, arrange, smear, spread, etc., in the form of a streak or streaks: to streak cold germs on a slide for microscopic study.
verb (used without object)
to become streaked.
to run, go, or work rapidly.
to flash, as lightning.
to make a sudden dash in public while naked, especially as a prank.
blue streak. blue streak.

before 1000; (noun) Middle English streke, akin to strike, Old English strica stroke, line, mark; cognate with German Strich, Gothic striks stroke, Latin strigil strigil; (v.) late Middle English streken to cross out, derivative of the noun (akin to strike, stroke1)

streakedly [streekt-lee, stree-kid-lee] , adverb
streakedness, noun
streaker, noun
streaklike, adjective
interstreak, verb (used with object)
unstreaked, adjective

3. cast, touch, element, trace. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source Link To unstreaked
World English Dictionary
streak1 (striːk)
1.  a long thin mark, stripe, or trace of some contrasting colour
2.  a.  (of lightning) a sudden flash
 b.  (as modifier): streak lightning
3.  an element or trace, as of some quality or characteristic
4.  a strip, vein, or layer: fatty streaks
5.  a short stretch or run, esp of good or bad luck
6.  mineralogy the powdery mark made by a mineral when rubbed on a hard or rough surface: its colour is an important distinguishing characteristic
7.  bacteriol the inoculation of a solid culture medium by drawing a wire contaminated with the microorganisms across it
8.  informal an act or the practice of running naked through a public place
9.  (tr) to mark or daub with a streak or streaks
10.  (intr) to form streaks or become streaked
11.  (intr) to move rapidly in a straight line
12.  informal (intr) to run naked through a crowd of people in a public place in order to shock or amuse them
[Old English strica, related to Old Frisian strike, Old High German strih, Norwegian, Swedish strika]

streak2 (striːk)
a variant spelling of strake

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Word Origin & History

O.E. strica "line of motion, stroke of a pen" (related to strican "pass over lightly," see strike), from P.Gmc. *strikon (cf. M.L.G. streke "stroke, line," O.H.G., Ger. strich, Goth. striks "stroke, line"), from PIE base *streig- (see
strigil). Sense of "long, thin mark" is first found 1567. Meaning "a temporary run (of luck)" is from 1843.

1768, "to go quickly, to rush, run at full speed," respelling (by association with streak (n.)) of streek "to go quickly" (late 14c.), originally "to stretch oneself" (mid-13c.), a northern M.E. variant of stretch (v.). Streaking "running naked in public" first recorded 1973.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Medical Dictionary

streak (strēk)
A line, stripe, smear, or band differentiated by color or texture from its surroundings.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
American Heritage
Science Dictionary
streak   (strēk)  Pronunciation Key 
  1. The characteristic color of a mineral after it has been ground into a powder. Because the streak of a mineral is not always the same as its natural color, it is a useful tool in mineral identification.

  2. A bacterial culture inoculated by drawing a bacteria-laden needle across the surface of a solid culture medium. Also called streak plate.

  3. Any of various viral diseases of plants characterized by the appearance of discolored stripes on the leaves or stems.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Example sentences for unstreaked
The adult has an unstreaked brown back and whitish underparts.
Copyright © 2015, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature