Where does “photoregulator” come from?
photoregulator (English) comes from English photo, from English photography, from French photographie, from Ancient Greek φωτο-, from Ancient Greek φῶς, from Proto-Hellenic pʰáos, from Proto-Indo-European bʰéh₂os, from Proto-Indo-European bʰeh₂-.
photoregulator (English): A photochemical regulator
Definitions
- A photochemical regulator
Ancestry of “photoregulator”, step by step
photoregulator traces back through two separate lines of ancestry.
via English photo
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | photo | A photograph; A photo finish; To take a... |
| 2 | English | photography | The art and technology of producing images on... |
| 3 | French | photographie | photography; photograph |
| 4 | Ancient Greek | φωτο- | — |
| 5 | Ancient Greek | φῶς | Attic form of φᾰ́ος |
| 6 | Proto-Hellenic | pʰáos | — |
| 7 | Proto-Indo-European | bʰéh₂os | — |
| 8 | Proto-Indo-European | bʰeh₂- | to shine, glow light; to speak, say |
| 9 | Proto-Indo-European | bʰeh₂-s-ri- | — |
via English regulator
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | regulator | A device that controls or limits something; A... |
| 2 | English | regulate | To dictate policy; To control or direct according... |
| 3 | Latin | regulatus | regulated, having been regulated |
| 4 | Latin | rēgulō | to direct, regulate |
| 5 | Latin | rēgula | rule, bar |
| 6 | Latin | -ula | regō + API → rēgula; tegō + API → tēgula;... |
| 7 | Proto-Indo-European | -tlom | Alternative form of *-trom |
| 8 | Proto-Indo-European | -trom | Forms nouns denoting a tool or instrument |
| 9 | Proto-Indo-European | -tḗr | Derives agent nouns from verbs, denoting someone... |