Where does “photoperiod” come from?
photoperiod (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-.
photoperiod (English): The normal duration of natural daylight...
Definitions
- The normal duration of natural daylight...
Ancestry of “photoperiod”, step by step
photoperiod 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 period
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | period | A length of time; A period of time in history... |
| 2 | Middle English | periode | — |
| 3 | Middle French | periode | — |
| 4 | Latin | periodus | a complete sentence; period; the circuit of the... |
| 5 | Ancient Greek | περίοδος | going round in a circle, flank march;... |
| 6 | Ancient Greek | ὁδός | threshold; road, path, way; journey, trip,... |
| 7 | Proto-Hellenic | *hodós | — |