Definition of alexandrite in English:

alexandrite

noun

  • [mass noun] A gem variety of chrysoberyl which appears green in daylight and red in artificial light.

    • ‘Solid-state lasers such as alexandrite and titanium-doped sapphire are widely tunable between 1.1 and 1.6 m.’
    • ‘Randy G. Lander is a Russian descendant and she carries on the medieval Khazars tradition of jewelry trading with an emphasis on alexandrite. She can tell you alexandrite is the rarest gemstone on earth.’
    • ‘Lasers with wavelengths of 600-1100 nm (such as the ruby, alexandrite, and diode) penetrate deeply and are absorbed by eumelanin in the hair shaft and follicle, which is thought to be the target chromophore.’
    • ‘Before nightfall, the group had seen amethyst, citrine, imperial topaz, aquamarine, tourmaline, and even alexandrite.’
    • ‘He rains light kisses all over her face and neck, taking her hand and sliding a beautiful diamond and alexandrite ring onto her finger.’

Origin

Mid 19th century: from the name of Tsar Alexander II of Russia (see Alexander)+ -ite.

Pronunciation:

alexandrite

/ˌalɪɡˈzɑːndrʌɪt/