Etymograph

English

refractometry

From refract + -o- + -metry.

Formed from refract + -o- + -metry

Proto-Indo-European *bʰreg- ‘to break’

Latin frangō ‘to break’

Latin refrāctum

English refract

Today it means

noun the measurement of refractive index

Sources

Sources: Wiktionary, “refractometry”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / refractometry

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