| chylomicron | (noun) a microscopic particle of triglycerides produced in the intestines during digestion; in the bloodstream they release their fatty acids into the blood | - |
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| macron | (noun) a diacritical mark (-) placed above a vowel to indicate a long sound | - |
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| micromicron | (noun) a metric unit of length equal to one trillionth of a meter | Synonyms: picometer, picometre |
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| micron | (noun) a metric unit of length equal to one millionth of a meter | Synonyms: micrometer, micrometre |
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| millimicron | (noun) a metric unit of length equal to one billionth of a meter | Synonyms: micromillimeter, micromillimetre, nanometer, nanometre, nm |
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| omicron | (noun) the 15th letter of the Greek alphabet | - |
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