| Subject | English | Spanish |
| nat.res. | Barbary ground squirrel | ardilla moruna (Atlantoxerus getulus) |
| environ., nat.res. | Central American squirrel monkey | saimiri dorsirrojo (Saimiri oerstedii) |
| mech.eng. | closed-gas-circuit water-cooled squirrel-cage induction motor | motor de inducción de jaula de ardilla refrigerado por aire del circuito cerrado de gas |
| mamm. | common gray squirrel | petigrís |
| life.sc., environ. | Deppe's squirrel | ardilla costarricense (Sciurus deppei) |
| antenn. | double squirrel-cage-type magnetron | magnetron de doble jaula de ardilla |
| life.sc., environ. | Ebian's palm squirrel | ardilla de las palmeras (Epixerus ebii) |
| mamm. | flying squirrel Pteromys petaurista | ardilla voladora |
| mamm. | flying squirrel Pteromys petaurista | guigui |
| mamm. | gray squirrel | ardilla gris |
| nat.res. | grey Siberian squirrel | ardilla gris siberiana |
| nat.res. | grey Siberian squirrel | petigrís (Sciurius vulgaris) |
| nat.res. | ground squirrel | ardilla terrestre (Citellus, Spermophilus, Spermophylus) |
| mamm. | ground squirrel | ardilla de la tierra |
| agric. | hair of squirrels | pelo de ardilla |
| agric. | hair of the Siberian squirrel | pelo de petigris |
| nat.res. | Long-eared flying squirrel | ardilla voladora enana (Idiurus macrotis) |
| life.sc., environ. | long-eared flying squirrel | ardilla voladora enana (Idiurus macrotis) |
| environ., nat.res. | red-backed squirrel monkey | saimiri dorsirrojo (Saimiri oerstedii) |
| life.sc., environ. | red-backed squirrel monkey or Central American squirrel monkey | saimiri dorsirrojo (Saimiri oerstedii) |
| el. | squirrel-cage armature | rotor en jaula de ardilla |
| el. | squirrel-cage armature | inducido en jaula de ardilla |
| auto. | squirrel cage fan | ventilador con aletas de tipo cilíndrico |
| chem. | squirrel cage impeller | mezcladora con rodete de jaula de ardilla |
| mech.eng., el. | squirrel cage induction motor | motor de inducción de jaula |
| el.mot. | squirrel cage induction motor | motor de inducción de jaula de ardilla |
| antenn. | squirrel-cage magnetron | magnetron en jaula de ardilla |
| el. | squirrel-cage motor | motor en jaula de ardilla |
| el. | squirrel-cage motor | motor en jaula |
| electric. | squirrel cage rotor | armadura de un motor de inducción |
| electric. | squirrel cage rotor | rotor de barras (de jaula de ardilla) |
| el. | squirrel-cage rotor | rotor en jaula de ardilla |
| mech.eng., el. | squirrel cage winding | devanado en jaula |
| mech.eng., el. | squirrel-cage winding | arrollamiento en forma de jaula de ardilla |
| el.mot. | squirrel cage winding | devanado de jaula de ardilla |
| el.mot. | squirrel cage winding | devanado de jaula |
| fish.farm. | squirrel hake | locha (Urophycis chuss) |
| fish.farm. | squirrel hake | brótola roja (Urophycis chuss) |
| fish.farm. | squirrel hake | locha roja (Urophycis chuss (Walbaum)) |
| med. | squirrel plague conjunctivitis | conjuntivitis tularémica (conjunctivitis tularensis) |
| environ., nat.res. | squirrels and marmots | ardillas (Sciuridae) |
| transp. | three-phase squirrel-cage motor | motor trifásico con jaula de ardilla |
