| English | Spanish |
| body mass | peso corporal |
| body mass | masa corporal |
| brain mass | pulpa cerebral |
| coagulated mass | masa coagulada (cruor) |
| coagulated mass | cruor sanguinis (cruor) |
| du Noyer mass | masa de Noyer |
| fragment mass of the derivation | masa fragmento del derivado |
| high resolution mass spectrometry | espectrometría de masas de alta resolución |
| interfilar mass | hialoplasma |
| interfilar mass | citolinfa |
| interfilar mass | enquilema |
| interfilar mass | paramitoma |
| interfilar mass | substancia fundamental |
| interfilar mass | paraplasma |
| interfilar mass | masa interfilar |
| intermediate mass | comisura media (connexus interthalamicus, commissura media cerebri, commissura mollis, adhaesia interthalamica) |
| intermediate mass | comisura gris del cerebro (connexus interthalamicus, commissura media cerebri, commissura mollis, adhaesia interthalamica) |
| intermediate mass | comisura gris media (connexus interthalamicus, commissura media cerebri, commissura mollis, adhaesia interthalamica) |
| intermediate mass | comisura blanda (connexus interthalamicus, commissura media cerebri, commissura mollis, adhaesia interthalamica) |
| lateral mass of sacrum | parte lateral del hueso sacro (pars lateralis ossis sacri) |
| lateral mass of the ethmoid | laberinto etmoidal |
| maintenance of bone mass | mantenimiento de la masa ósea |
| mass concrete biological shield | blindaje biológico de hormigón macizo |
| mass-dose capsules | cápsulas de dosis masivas |
| mass examination of employees | reconocimiento médico sistemático de los trabajadores |
| mass infection | infección masiva |
| mass motility | motilidad masiva |
| mass screening | cribado masivo |
| mass screening | cribado de población |
| mass selection | selección masal |
| mulberry mass | mórula |
| Pansch injection mass | masa de inyección de Pansch |
| Priestley mass | masa de Priestley |
| progressive mass fibrosis | neumoconiosis complicada (masses pseudo-tumorales) |
| protein mass | masa proteica |
| volume mass | volumen másico |
