kern·ite (kûr n t )n. A colorless to white lustrous crystalline mineral, Na2B4O7·4H2O, that is a major source of ore of boron. [After Kern, a county of southern California.] |
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| Noun | 1. | kernite - a light soft mineral consisting of hydrated sodium borate in crystalline form; an important source of boron atomic number 5, boron, B - a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition |
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