| Subject | English | French |
| chem. | Aluminium-tri-isopropoxide | Isopropylate d'aluminium |
| chem. | antimony tri-iodide | triiodure d'antimoine |
| chem. | arsenic tri-iodide | triiodure d'arsenic |
| chem. | arsenic tri-iodide | AsI3 |
| food.ind. | dodecyl 3, 4, 5-tri-hydroxybenzoate | gallate de dodécyle |
| food.ind. | dodecyl 3, 4, 5-tri-hydroxybenzoate | ester n-dodécylique de l'acide 3,4,5-trihydroxybenzoïque |
| food.ind. | dodecyl 3, 4, 5-tri-hydroxybenzoate | lauryl gallate |
| food.ind. | dodecyl 3, 4, 5-tri-hydroxybenzoate | ester dodécylique de l'acide gallique |
| comp. | IC tri-metal processing | fabrication de circuits trimétalliques |
| chem. | neopentyldiallyloxy, tridioctylphosphato-titanate | titane IV, 2,2 bis 2-propenolate-méthyl butanolate, tris (dioctyle)phosphate |
| chem. | neopentyldiallyloxy, tridioctylphosphato-titanate | diallyloxy, tridioctylphosphatotitanate de néopentyle |
| chem., engl. | neopentyldiallyloxy, tridioctylphosphato-titanate | LICA 12 |
| construct. | Philibert truss, de Lorn truses | ferme Philibert |
| chem. | phosphorus tri-iodide | triiodure de phosphore |
| chem. | phosphorus tri-iodide | PI3 |
| chem. | poly-2,4,4,5,5,6,6-heptafluoro-2-tri-fluoromethyl-3-oxaheptane-1,7-diol formal | poly-2,4,4,5,5,6,6-heptafluoro-2-tri-fluorométhyl-3-oxaheptane-1,7-diol formal |
| agric., chem. | tri-allate | triallate |
| agric., chem. | tri-allate | N,N-Di-isopropylthiocarbamate de S-2,3,3-trichloroallyle |
| chem. | tri2-hydroxyethylamine | trihydroxyethylamine |
| chem. | tri2-hydroxyethylamine | tri-éthanolamine |
| mech.eng. | tri axis mechanical feed | transfert mécanique à trois axes |
| transp., mil., grnd.forc. | tri-axle | essieu triple |
| transp., mil., grnd.forc. | tri-axle | essieu tridem |
| transp. | tri axle | Essieu tridem |
| commun. | tri-band | tri-bande |
| commun. | tri-band telephone | téléphone tribande |
| cultur. | tri-camera photography | photographie trimétrogone |
| cultur. | tri-camera photography | faisceau de trois photographies |
| gen. | tri-chad | confetti tricorne |
| chem. | tri-chloracetic acid | acide acétique trichloré |
| chem. | tri-chloracetic acid | acide tri-chloracétique |
| nat.res. | tri-coloured nun | capucin tricolore (Lonchura malacca) |
| nat.res. | tri-coloured nun | capucin à dos marron (Lonchura malacca) |
| nat.res. | tri-coloured nun | jacobin (Lonchura malacca) |
| nat.res. | tri-coloured nun | nonnette à dos marron (Lonchura malacca) |
| nat.res. | tri-coloured nun | capucin à ventre blanc (Lonchura malacca) |
| nat.res. | tri-coloured nun | capucin marron (Lonchura malacca) |
| transp. | tri-current traction unit | engin moteur tricourant |
| comp. | tri-dimensional | à trois dimensions |
| comp. | tri-dimensional | 3D |
| comp. | tri-dimensional | tridimensionnel |
| met. | tri-foil filler metal | métal d'apport sandwich |
| oil | tri-gas | trigaz |
| archit. | tri glyph | triglyphe |
| biotechn. | tri-hybrid | tri-hybride |
| chem. | tri-isobutyl phosphate | phosphate de triisobutyle |
| chem. | tri-isobutylene | triisobutylène |
| IT | tri-linear filtering | filtre tri-linéaire |
| IT, dat.proc. | tri-multi-processor | tri-multiprocesseur |
| transp. | Tri-national Bodensee Shipping Committee | Commission maritime tripartite du lac de Constance |
| health., engl. | tri-n-butyl phosphate | tri-n-butyl phosphate |
| health., chem. | tri-o-tolyl phosphate | tris-o-crésylphosphate |
| health., chem. | tri-o-tolyl phosphate | tri-o-tolyi phosphate |
| chem. | tri potassium orthophosphate | E340iii |
| chem. | tri potassium orthophosphate | hydrogéno-orthophosphate tripotassique |
| chem. | tri potassium orthophosphate | E340 iii |
| IT | tri-processor | tri-processeur |
| chem. | tri-propylène | tripropylène |
| antenn. | tri-rod coupler | coupleur à trois barres |
| commun. | Tri-Service Group on Communications and Electronics | Groupe interarmées sur les télécommunications et les matériels électroniques |
| chem. | tri-sodium citrate dihydrate | citrate trisodique dihydraté |
| chem. | tri-sodium citrate dihydrate | citrate de tri-sodium dihydraté |
| chem. | tri sodium orthophosphate | E339iii |
| chem. | tri sodium orthophosphate | orthophosphate trisodique |
| chem. | tri sodium orthophosphate | E339 iii |
| agric. | tri-sodium phosphate PO4 NA3 | phosphate trisodique |
| biol. | tri-species hybrid | hybride tri-spécifique |
| piez. | tri-state output | sortie avec trois états |
| avia., Canada | Tri-Terminal Specialty | sous-unité Contrôle terminal triple |
| health. | tri-unsaturated fatty acids | acide gras tri-éthénique |
| pack. | tri-walled corrugated board | carton ondulé triple cannelé |
| pack. | tri-walled corrugated board | carton ondulé triple face ou épaisseur |
| pack. | tri-walled corrugated board | carton ondulé triple face |