chrysoberyl

noun

chryso·​ber·​yl ˈkri-sə-ˌber-əl 

1

obsolete : a yellowish beryl

2

: a hard usually yellow or green mineral consisting of beryllium aluminum oxide and sometimes used as a gem

Word History

Etymology

borrowed from Latin chrȳsobērullus, from Greek chrȳso- chryso- + bḗryllos beryl

First Known Use

1661, in the meaning defined at sense 1