eucrite

noun

eu·​crite ˈyü-ˌkrīt 

1

: a stony meteorite composed essentially of plagioclase and pigeonite

2

: a rock consisting of a very basic gabbro

eucritic

yü-ˈkri-tik 

adjective

Word History

Etymology

German Eukrit, from Greek eukritos easily discerned, from eu- + kritos separated, from krinein to separate — more at certain

First Known Use

1881, in the meaning defined at sense 1