Thesaurus: boron

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1. n. A nonmetallic element occurring abundantly in borax. It is reduced with difficulty to the free state, when it can be obtained in several different forms; viz., as a substance of a deep olive color, in a semimetallic form, and in colorless quadratic crystals similar to the diamond in hardness and other properties. It occurs in nature also in boracite, datolite, tourmaline, and some other minerals. Atomic weight 10.9. Symbol B.
2. n. a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder
3. A nonmetallic element occurring abundantly in borax. It is reduced with difficulty to the free state, when it can be obtained in several different forms; viz., as a substance of a deep olive color, in a semimetallic form, and in colorless quadratic crystals similar to the diamond in hardness and other properties. It occurs in nature also in boracite, datolite, tourmaline, and some other minerals. Atomic weight 10.9. Symbol B.
4. A nonmetallic element occurring abundantly in borax. It isreduced with difficulty to the free state, when it can be obtained inseveral different forms; viz., as a substance of a deep olive color,in a semimetallic form, and in colorless quadratic crystals similarto the diamond in hardness and other properties. It occurs in naturealso in boracite, datolite, tourmaline, and some other minerals.Atomic weight 10.9. Symbol B.
5. n:100 n. a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder