streak

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streak

1. 
a. (of lightning) a sudden flash
b. (as modifier): streak lightning
2. Mineralogy the powdery mark made by a mineral when rubbed on a hard or rough surface: its colour is an important distinguishing characteristic

streak

[strēk]
(mineralogy)
The color of a powdered mineral, obtained by rubbing the mineral on a streak plate.
References in periodicals archive ?
Recently, intravitreally administrated bevacizumab, a vascular endothelial growth factor (VEGF) inhibitor that is a full size antibody to all isoforms of VEGF-A, has been successfully used as an off label treatment on CNV secondary to angioid streaks [1,17].
Angioid streaks of the fundus are the most common ocular findings and are associated with pseudoxanthoma elasticum 85% of the time.
Fundoscopic examination revealed angioid streaks around the optic discs and peau d'orange appearance in the temporal macula of both eyes.
8 Characteristic ocular defect is angioid streaks of retina, reddish-brown curvilinear bands that radiate from the optic disk.
Five of the most common causes are exudative macular degeneration, high/ pathological myopia, choroidal rupture, angioid streaks, and punctate inner choroidopathy.
Angioid streaks is a hereditary condition resulting in a degeneration of Bruch's membrane and the RPE.
Rare associations include retinitis pigmentosa (RP) and angioid streaks.