Standard Lemma guide

refractometer

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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No pronunciation record was provided for this word.

1

noun

Meaning 1

An optical instrument used to measure the refractive index of a substance.

Definition source: English Wiktionary via Wiktextract

Topics: natural-sciences, physical-sciences, physics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

measuring instrument for measuring the refractive index of a substance

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: measuring instrument, measuring system, measuring device

History

Etymology

Etymology tree English refract Ancient Greek -ο- (-o-)der. Latin -o-bor. English -o- Proto-Indo-European *meh1- Proto-Indo-European *-tḗr Proto-Indo-European *-trom Proto-Hellenic *-tron Ancient Greek -τρον (-tron) Ancient Greek μέτρον (métron)lbor. French -mètrebor. English -meter English refractometer From refract + -o- + -meter.

Across languages

Translations

13 source translations are retained for this English entry.

  • Catalan: refractòmetre — instrument used to measure the refractive index
  • French: réfractomètre — instrument used to measure the refractive index
  • Galician: refractómetro — instrument used to measure the refractive index
  • German: Refraktometer — instrument used to measure the refractive index
  • Greek: διαθλασίμετρο (diathlasímetro) — instrument used to measure the refractive index
  • Hungarian: refraktométer — instrument used to measure the refractive index
  • Italian: rifrattometro — instrument used to measure the refractive index
  • Malay: refraktometer — instrument used to measure the refractive index
  • Portuguese: refratómetro — instrument used to measure the refractive index
  • Portuguese: refratômetro — instrument used to measure the refractive index
  • Romanian: refractometru — instrument used to measure the refractive index
  • Spanish: refractómetro — instrument used to measure the refractive index
  • Uzbek: refraktometr — instrument used to measure the refractive index