labradorite Min.
(læbrəˈdɒraɪt)
[f. Labrador + -ite. (Named Labradorstein by Werner in 1780, because it came from Labrador.)]
A kind of feldspar, which shows a brilliant variety of colour when turned in the light.
| 1814 Allan Min. 18 Opalescent [felspar], Labradore stone..Labradorite. 1850 Daubeny Atomic Theory xii. (ed. 2) 417 Recent lavas..are made up principally, of labradorite, a silicate with 1 atom only of acid, and of hornblende or augite. |
Hence labradoˈritic a.
| In mod. Dicts. |