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streak |
Also found in: Dictionary/thesaurus, Medical, Wikipedia | 0.04 sec. |
streakColour of a mineral in its powdered form, usually obtained by rubbing the mineral on a hard, white surface (e.g., a tile of unglazed porcelain) to yield a streak of fine powder. The streak's colour is usually constant for a given mineral, even if the mineral varies in colour as it occurs in the field or if the streak is different from the colour of the unpowdered mineral. Streak is diagnostically useful because it may distinguish between mineral species that are otherwise similar in appearance. |
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? Mentioned in | ? References in periodicals archive | ||
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| If you eat lots of greasy foods, ugly fatty streaks may already be building up in your arteries. The body tries to heal that damage by sending in smooth muscle cells to cover the fatty streak and repair the wall. Alone, the fatty streak is harmless, but without it, heart disease would have no place to begin. |
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