Where does “fire triangle” come from?
fire triangle (English) comes from English fire, from Middle English fier, from Old English fȳr, from Old English feor, from Proto-Germanic ferrai, from Proto-Indo-European per-nóy, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.
fire triangle (English): The three elements necessary and sufficient to sustain a fire: fuel (e.g. wood or petrol/gasoline), oxidizer (e.g. oxygen), and sufficient heat (e.g. reaction temperature or activation energy)
Definitions
- The three elements necessary and sufficient to sustain a fire: fuel (e.g. wood or petrol/gasoline), oxidizer (e.g. oxygen), and sufficient heat (e.g. reaction temperature or activation energy)
Ancestry of “fire triangle”, step by step
fire triangle traces back through two separate lines of ancestry.
via English fire
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | fire | A chemical reaction involving the bonding of... |
| 2 | Middle English | fier | Alternative form of figer |
| 3 | Old English | fȳr | fire |
| 4 | Old English | feor | Alternative form of feorr; far |
| 5 | Proto-Germanic | ferrai | far, distant |
| 6 | Proto-Indo-European | per-nóy | — |
| 7 | Proto-Indo-European | per- | before, in front; first; to go through |
| 8 | Proto-Indo-European | pr̥tós | passed , crossed |
via English triangle
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | triangle | A polygon with three sides and three angles; A... |
| 2 | Middle English | triangle | — |
| 3 | Old French | triangle | — |
| 4 | Latin | triangulum | triangle; nominative neuter singular of... |
| 5 | Latin | triangulus | triangular, three-cornered, three-sided;... |
| 6 | Latin | Angulus | A city of the Vestini, situated on a hill near the Adriatic Sea, now the town of Città Sant'Angelo |
| 7 | Proto-Indo-European | h₂engulos | joint? |
| 8 | Proto-Indo-European | h₂eng- | curve, bend |