Where does “keratorefractometer” come from?
keratorefractometer (English) comes from English refractometer, from English refract, from Latin refractum, from Latin refractus, from Latin refringere, from Latin rĕ-, from Latin prōdūcō, from Latin prō- — passed , crossed.
keratorefractometer (English): An optical device that measures refraction of the cornea
Definitions
- An optical device that measures refraction of the cornea
Ancestry of “keratorefractometer”, step by step
keratorefractometer traces back through two separate lines of ancestry.
via English refractometer
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | refractometer | An optical instrument used to measure the... |
| 2 | English | refract | To change direction as a result of entering a... |
| 3 | Latin | refractum | nominative neuter singular of refrāctus;... |
| 4 | Latin | refractus | broken up or open |
| 5 | Latin | refringere | second-person singular future passive indicative... |
| 6 | Latin | rĕ- | back, backwards |
| 7 | Latin | prōdūcō | to lead or bring forth, forward or out |
| 8 | Latin | prō- | forward direction, forward movement |
| 9 | Proto-Italic | *pro- | pro- see the Latin entry for further meanings |
| 10 | Proto-Indo-European | pro- | toward, forward |
| 11 | Proto-Indo-European | por- | to give birth; forward, through; going, passage |
| 12 | Proto-Indo-European | per- | before, in front; first; to go through |
| 13 | Proto-Indo-European | pr̥tós | passed , crossed |
via English kerato
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | kerato | — |