Where does “photoirritancy” come from?
photoirritancy (English) comes from English irritancy, from English irritant, from French irritant, from Latin irrito, from Latin irritus, from Latin ratus, from Latin rēōr, from Proto-Italic rēōr — to fit, to fix, to put together.
Ancestry of “photoirritancy”, step by step
photoirritancy traces back through two separate lines of ancestry.
via English irritancy
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | irritancy | The quality of being irritant or irritating; The... |
| 2 | English | irritant | Causing irritation or inflammation; Rendering... |
| 3 | French | irritant | present participle of irriter; irritating;... |
| 4 | Latin | irrito | I incite, excite, stimulate, instigate, provoke;... |
| 5 | Latin | irritus | invalid, void, null and void; ineffective,... |
| 6 | Latin | ratus | considered, having been considered; established,... |
| 7 | Latin | rēōr | to reckon, calculate |
| 8 | Proto-Italic | rēōr | to reckon, to calculate; to think, to deem, to... |
| 9 | Proto-Indo-European | h₂reh₁- | to think, reason; to arrange |
| 10 | Proto-Indo-European | h₂er- | to fit, to fix, to put together |
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- | — |