noun Download 🔗Share The chemical element (symbol B) with an atomic number of 5, which is a metalloid found in its pure form as a dark amorphous powder. Examples : "The garden fertilizer contained boron to help the plants grow stronger stems. " element chemistry substance material science Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share A single atom of this element. Examples : "The lab technician carefully picked up a single boron atom with the atomic force microscope. " element substance material chemistry science Chat with AIVocabulary GamePractice Reading