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| Terms for subject Environment (31552 entries) |
| topic report | rapport thématique | |
| topic workshop | atelier thématique | |
| topographical enquiry | enquête topotraphique | |
| topped timber | bois écimé | |
| topped timber | bois écimés | |
| torch | arbre torche | |
| torching | arbre torche | |
| tornado | tornade | |
| tornado | trombe | |
| tornado | cyclone | |
| tornado (A rapidly rotating column of air developed around a very intense low-pressure centre. It is associated with a dark funnel-shaped cloud and with extremely violent winds (>300km/h) blowing in a counterclockwise spiral, but accompanied by violent downdraughts. The precise mechanisms are not fully understood but the following atmospheric conditions appear to be necessary for tornado development: a layer of warm moist air at low altitude; a layer of dry air at higher altitude with an inversion of temperature at about 1.000 m; a triggering mechanism, usually in the form of an active, intense cold front or solar heating of the ground which will create a vortex) | tornade | |
| tornado | tornado | |
| torrent | gave | |
| torrent | rivière de montagne | |
| tortoise | tortue terrestre | |
| tortoise (Any herbivorous terrestrial chelonian reptile of the family Testudinidae, of most warm regions, having a heavy dome-shaped shell and clawed limbs) | tortue terrestre | |
| tortoises | tortue terrestre | |
| total acidity of ambient air | indice d'acidité totale de l'air ambiant | |
| total alkali strength | titre alcalimétrique complet | |
| total amount | ozone total |