peridot
oxford
views 1,703,201 updated Jun 08 2018peridot Gem variety of transparent green olivine, a silicate mineral. Large crystals are found on St John's Island in the Red Sea and in Burma (Myanmar).
World Encyclopedia
peridot
oxford
views 1,604,130 updated May 29 2018per·i·dot / ˈperiˌdät/ •
n. a green semiprecious variety of olivine.
The Oxford Pocket Dictionary of Current English
peridot
oxford
views 2,651,691 updated May 29 2018peridot †chrysolite XIV; the variety called olivine XVII. ME. peritot — OF. peritot (mod. -dot), of which there are several vars.; of unkn. orig.
The Concise Oxford Dictionary of English Etymology T. F. HOAD