| Subject | English | Spanish |
| life.sc. | auroral oval | óvalo auroral |
| med. | Flechsig's oval bundle | fascículo septomarginal |
| med. | Flechsig's oval bundle | centro oval de Flechsig |
| med. | oval air shadow of falciform ligament | sombra oval de aire del ligamento falciforme |
| med. | oval air shadow of falciform ligament Miller | sombra oval de aire del ligamento falciforme |
| med. | oval amputation | amputación oblicua |
| med. | oval amputation | loxotomia |
| med. | oval area of Flechsig | fascículo septomarginal |
| med. | oval area of Flechsig | centro oval de Flechsig |
| met. | oval bush | anillo ovalado |
| met. | oval bush | casquillo ovalado |
| antenn. | oval cathode | cátodo ovalado |
| med. | oval center | centro semioval |
| med. | oval center | centro oval |
| agric., industr. | oval cigarette | cigarrillo oval |
| agric. | oval comb for horses | almohaza oval |
| med. | oval corpuscles | corpúsculos de Meissner (corpuscula tactus) |
| med. | oval corpuscles | corpúsculos táctiles (corpuscula Meissneri) |
| tech. | oval countersunk head | cabeza ovalada embutida |
| transp., mech.eng. | oval drum | ovalidad del tambor |
| agric. | oval faced tooth shovel | reja oval de doble punta |
| med. | oval fasciculus | fascículo septomarginal |
| med. | oval fasciculus | centro oval de Flechsig |
| tech. | oval fillister head | cabeza ovalada ranurada |
| tech. | oval fillister head | cabeza cilíndrica ranurada |
| met. | oval flaw | mancha oval |
| antenn. | oval grid | rejilla ovalada |
| nat.sc., agric. | oval grouper | mero ovalado (Triso dermopterus) |
| transp., mech.eng. | oval head crew | tornillo de cabeza arqueada |
| wood. | oval knot | nudo oval |
| nat.sc., agric. | oval kumquat | kumcuat (Fortunella margarita) |
| nat.sc., agric. | oval kumquat | nagami (Fortunella margarita) |
| bot. | oval kumquat | nagami Fortunella margarita |
| bot. | oval kumquat | kumcuat Fortunella margarita |
| tech. | oval neck track bolts and hex nuts | pernos de brida de cuello ovalado y tuerca hexagonal |
| med. | oval pelvis | pelvis oval |
| industr., construct., chem. | oval punt | pontil oval |
| tech. | oval-section fuselage | fuselaje de sección ovalada |
| life.sc., fish.farm. | oval surf clam | - (Spisula ovalis) |
| med. | oval window | ventana oval (fenestra ovalis, fenestra vestibuli) |
| tech. | oval wire | alambre ovalado |
