| Subject | English | French |
| transp. | aileron spar | longeron d'aileron |
| paraglid. | auxiliary spar | faux longeron |
| chem. | bitter spar | dolomite |
| chem. | bitter spar | dolomie |
| industr. | body spar | feldspath pour pâte |
| transp., polit. | box spar | longeron-caisson |
| transp. | braced spar | âme de longeron en biellette |
| met. | brown spar | ankérite |
| earth.sc. | calc spar | calcite |
| earth.sc. | calc spar | spath calcaire |
| chem. | calc-spar | calcite |
| earth.sc. | calcareous spar | calcite |
| earth.sc. | calcareous spar | spath calcaire |
| met. | cube spar | anhydrite |
| met. | diamond spar | corindon |
| transp. | false spar | faux longeron |
| transp., polit. | fin spar | longeron de dérive |
| transp. | fin spar box | caisson de dérive |
| paraglid. | flange of the spar | semelle de longeron |
| met. | fluor-spar | chaux fautée |
| met. | fluor-spar | chaux fluatée |
| met. | fluor-spar | fluorine |
| met. | fluor-spar | liparite |
| met. | fluor-spar | spath fluor |
| gen. | fluor spar | spath fluor |
| med. | fluor-spar silicosis | poumon fluoro-silicotique |
| transp. | fluted spar web | âme de longeron gaufrée |
| transp. | front spar | longeron avant |
| chem. | glaze spar | feldspath pour glaçure |
| chem. | Greenland spar | cryolite |
| chem. | greenland spar | fluorure double d'aluminium et de sodium (min.) |
| agric., chem. | Greenland spar | cryolithe |
| coal. | heavy spar | barytine |
| chem. | heavy spar | spath pesant |
| nucl.phys., OHS | heavy spar | spath pesant (BaSO4) |
| nucl.phys., OHS | heavy spar | barytine (BaSO4) |
| chem. | heavy spar | baryte |
| coal. | heavy spar | sulfate de baryum naturel |
| mineral. | heavy spar | spath lourd |
| met. | hollow spar | andalousite |
| chem. | ice spar | fluorure double d'aluminium et de sodium (min.) |
| chem. | ice spar | cryolithe |
| earth.sc. | Iceland spar | calcite |
| met. | Iceland-spar | spath d'Islande |
| earth.sc. | Iceland spar | spath d'Islande |
| chem. | Iceland spar | carbonate de calcium |
| chem. | Iceland spar | craie calcaire min. calcite |
| chem. | Iceland spar | aragonite |
| chem. | Iceland spar | spath cristallin |
| mineral. | Iceland spar | spath d’Islande |
| met. | iron spar | fer oxydé carbonaté |
| earth.sc. | Labrador spar | labradorite |
| earth.sc. | Labrador spar | labrador |
| met. | lead spar | anglésite |
| earth.sc. | magnesium spar | dolomie |
| earth.sc. | magnesium spar | dolomite |
| paraglid. | main spar | longeron principal |
| met. | manganese spar | dialogite |
| met. | manganese spar | carbonate de manganèse |
| met. | pear spar | fluorine |
| earth.sc. | pearl spar | dolomie |
| earth.sc. | pearl spar | dolomite |
| transp. | rear spar | longeron arrière |
| industr., construct., chem. | rhomb of Iceland spar | rhomboèdre de spath d'Islande |
| earth.sc. | rhomb spar | dolomie |
| earth.sc. | rhomb spar | dolomite |
| met. | satin spar | sélénite fibreuse |
| met. | schiller spar | schillerspath |
| met. | smithsonite zinc-spar | smithsonite |
| met. | smithsonite zinc-spar | calamine |
| transp., polit. | spar boom | longeron |
| transp. | spar boom | semelle de longeron |
| transp. | spar box depth | profondeur de caisson |
| transp., nautic. | spar buoy | bouée à espar |
| transp. | spar cap | semelle de longeron rapportée |
| transp. | spar ceiling | vaigrage lateral |
| transp., polit. | spar frame | cadre de liaison voilure-fuselage |
| transp. | spar frame | couple longeron |
| mech.eng. | spar gate | porte en treillis |
| construct. | spar, rafter, common rafter, roof tree | chevron |
| industr. | spar timber | bois rond |
| agric., mech.eng. | spar tree | cabrette |
| agric., mech.eng. | spar tree | mât |
| agric., mech.eng. | spar tree | pylône |
| forestr. | spar tree | arbre-pylône |
| transp., chem. | spar varnish | vernis marine |
| chem. | spar varnish | vernis imperméable |
| chem., met. | spar varnish | vernis pour bateaux |
| transp. | spar web | âme de longeron |
| transp. | spar web wedge | clé d'âme de longeron |
| gen. | spars and stringers | longerons et nervures |
| gen. | spars for ships | espars marine |
| forestr. | tail spar | mât aval |
| forestr. | tail spar | mât de queue |
| met. | tin spar | cassitérite |
| transp. | two-spar construction | construction "bilongeron" |
| transp. | vertical stabilizer spar box | caisson de plan fixe vertical |
| paraglid. | web of spar | âme de longeron |
| transp. | wing spar | longeron d'aile |
| transp., avia. | wing spar box | caisson de voilure |
| transp., avia. | wing spar box | caisson central |
| transp. | wing-spar frame assembly | ensemble longeron-voilure |
| met. | zinc spar | smithsonite |
| industr., construct. | zinc spar | spath zinc |