streak

A line, stria, or stripe, especially one that is indistinct or evanescent. [A.S. strica]
- angioid streaks calcification of lamina basalis choroideae visible in the peripapillary fundus oculi; associated with pseudoexanthoma elasticum, sickle cell disease, and Paget disease; predisposing to choroidal neovascularization. SYN: elastosis dystrophica, Knapp streaks, Knapp striae.
- germinal s. SYN: primitive s..
- gonadal s. a form of aplasia in which the ovary is replaced by a functionless tissue, as found in Turner syndrome. SYN: s. gonad.
- Knapp streaks SYN: angioid streaks.
- meningitic s. a line of redness resulting from drawing a point across the skin, especially notable in cases of meningitis. SYN: Trousseau spot.
- Moore lightning streaks photopsia manifested by vertical flashes of light, seen usually on the temporal side of the affected eye, caused by the involutional shrinkage of vitreous humor.
- primitive s. ridge of epiblast in the midline at the caudal end of the embryonic disk from which arises the intraembryonic mesoderm and definitive endoderm; achieved by inward and then lateral migration of cells; in human embryos, it appears on day 15 and provides visual evidence of the cephalocaudal axis. SYN: germinal s..

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streak 'strēk n
1) a usu. irregular line or stripe see PRIMITIVE STREAK
2) inoculum implanted (as with a needle drawn across the surface) in a line on a solid medium
streak vt to implant (inoculum) in a line on a solid medium

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n.
(in anatomy) a line, furrow, or narrow band. See also primitive streak.

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(strēk) a line, stria, striation, or stripe.

Medical dictionary. 2011.

Synonyms:

Look at other dictionaries:

  • Streak — or streaking may refer to:*Streaking, running naked in a public place *Streaking (microbiology), a method of purifying micro organisms *Streak (mineralogy), the color left by a mineral dragged across a rough surface *Streak camera, device to… …   Wikipedia

  • Streak — Runner ist eine Bezeichnung für Läufer, die täglich laufen. Nach den Regeln der amerikanischen Streak Running Vereinigung (USRSA, United States Running Streak Association), die weltweit anerkannt werden, gelten für einen Streak, also eine Serie… …   Deutsch Wikipedia

  • streak — UK US /striːk/ noun [C, usually singular] ► a period of time during which something continues to happen, for example to go up or down in value or to succeed or fail: a streak of sth »Stocks tumbled Thursday, ending a three session streak of… …   Financial and business terms

  • streak — [strēk] n. [ME streke < OE strica: for IE base see STRIKE] 1. a line or long, thin mark; stripe or smear, generally differing in color or texture from the surrounding area 2. a ray of light or a flash, as of lightning 3. a vein or stratum of a …   English World dictionary

  • streak´i|ly — streak|y «STREE kee», adjective, streak|i|er, streak|i|est. 1. marked with streaks; streaked: »an old man with a streaky gray chin beard (Booth Tarkington). 2 …   Useful english dictionary

  • streak|y — «STREE kee», adjective, streak|i|er, streak|i|est. 1. marked with streaks; streaked: »an old man with a streaky gray chin beard (Booth Tarkington). 2 …   Useful english dictionary

  • streak — ► NOUN 1) a long, thin mark of a different substance or colour from its surroundings. 2) an element of a specified kind in someone s character: a ruthless streak. 3) a spell of specified success or luck: a winning streak . ► VERB 1) mark with… …   English terms dictionary

  • Streak — Streak, v. t. [imp. & p. p. {Streaked}; p. pr. & vb. n. {Streaking}.] 1. To form streaks or stripes in or on; to stripe; to variegate with lines of a different color, or of different colors. [1913 Webster] A mule . . . streaked and dappled with… …   The Collaborative International Dictionary of English

  • Streak — Streak, v. t. [Cf. {Stretch}, {Streek}.] To stretch; to extend; hence, to lay out, as a dead body. [Obs. or Prov. Eng. & Scot.] [1913 Webster] …   The Collaborative International Dictionary of English

  • Streak — Streak, n. [OE. streke; akin to D. streek a line, stroke, G. strich, AS. strica, Sw. strek, Dan. streg, Goth. stricks, and E. strike, stroke. See {Strike}, {Stroke}, n., and cf. {Strake}.] 1. A line or long mark of a different color from the… …   The Collaborative International Dictionary of English

  • streak — [n] vein, line; small part band, bar, beam, dash, element, hint, intimation, layer, ray, ridge, rule, shade, slash, smear, strain, stream, strip, stripe, stroke, suggestion, suspicion, touch, trace; concepts 436,628,657,727 streak [v] make a line …   New thesaurus

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