refractometer

About 0.09 uses per million words.

Meaning

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

Similar words

abbe refractometer autorefractometer keratorefractometer reflectometer autorefractometry keratorefractometry photorefractor refractor retinoscope dioptometer

Often followed by

is and reading or at for to readings with

Word family

refractometers refractometric refractometries refractometry