Where does “reactivity” come from?
Reactivity derives from English reactive, which combines English react and the Latin suffix -ivus, ultimately from Proto-Indo-European -iHwós, while the noun form adds Latin -itas to Latin actum, the past participle of Latin ago meaning to do or drive.
reactivity (English): responsiveness to stimulation; relative...
Definitions
- responsiveness to stimulation; relative...
Ancestry of “reactivity”, step by step
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | -ity | Used to form a noun from an adjective;... |
| 2 | Middle English | -ite | — |
| 3 | Old French | -ité | -ity |
| 4 | Latin | -itās | — |
| 5 | Proto-Indo-European | -teh₂ts | Used to form nouns representing state of being |
| 6 | Proto-Indo-European | -teh₂ | Used to form nouns representing state of being |
| 7 | Proto-Indo-European | -tós | Creates verbal adjectives from verb stems |