Where does “photodensity” come from?
photodensity (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-.
photodensity (English): The optical density of an object, but especially that of tissue and bone to X-rays
Definitions
- The optical density of an object, but especially that of tissue and bone to X-rays
Ancestry of “photodensity”, step by step
photodensity 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 density
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | density | A measure of the mass of matter contained by a... |
| 2 | Middle French | densité | — |
| 3 | Old French | dempsité | — |
| 4 | Latin | densitas | thickness; density; abundance |
| 5 | Latin | -tās | ty, -dom, -hood, -ness, -ship |
| 6 | Proto-Indo-European | -teh₂ts | Used to form nouns representing state of being |
| 7 | Proto-Indo-European | -teh₂ | Used to form nouns representing state of being |
| 8 | Proto-Indo-European | -tós | Creates verbal adjectives from verb stems |