English

geophase

Coined by Alexander Fersman, geo- + phase

Formed from geo- + phase

Proto-Hellenic *gaya

Ancient Greek γῆ ‘earth’

English geo-

Proto-Indo-European *bʰeh₂- ‘to shine’

…

Proto-Hellenic *pʰáňňō ‘to appear’

Ancient Greek φαίνω ‘to bring to light; to appear’

Ancient Greek φάσις ‘appearance’

New Latin phasis

English phase

The story

Coined by Alexander Fersman, geo- + phase

noun A point in the sequence of geochemical changes that occur as minerals are formed from cooling magma.

Language periods are conventional ranges, not dates for this word.

Etymograph / geophase