boron

plural borons

1. uncountableusuallychemistryThe chemical element (symbol B) with an atomic number of 5, which is a metalloid found in its pure form as a dark amorphous powder.

   For each X point, four borons in the same plane composing a B₆ cluster provide these orbitals.

   2001 August 10, J. Akimitsu, K. Takenawa, K. Suzuki, H. Harima, Y. Kuramoto, “High-Temperature Ferromagnetism in CaB₂C₂”, in Science, volume 293, number 5532, →DOI, pages 1125–1127

   2 more examples

   The B₆-type octahedral borons are each bonded to five other boron atoms; four are part of the same octahedron, and one is external to this octahedron.

   1976, Allen M[yron] Alper, editor, Phase Diagrams: Materials Science and Technology (Refractory Materials; 6), New York, N.Y.; London: Academic Press, →ISBN, page 106

   PIRG noted the European Union has a limit of 300 ppm for boron and that there should be a “full-fledged investigation to determine if limits should be established” in the US.

   2018 November 20, Wayne Drash, “Consumer group warns of ‘dangerous’ slime products and other hazardous toys”, in CNN

   1. uncountableusuallychemistryAn atom of this element.

plural Borons

1. A surname.
2. A census-designated place in Kern County, California, United States.