| Subject | English | Spanish |
| gen. | core internals | interiores del núcleo |
| gen. | core internals | partes internas del núcleo |
| comp., MS | internal company | empresa interna (A company that is part of an intercompany organization and that is linked to other internal companies within the same organization, either as a customer or as a vendor) |
| commun. | internal congestion | bloqueo interno |
| agric. | internal economy | economía interior |
| obs., fin., environ. | internal environmental audit | auditoría medioambiental |
| econ. | internal equilibrium | equilibrio interior |
| econ. | internal equilibrium | equilibrio económico interno |
| obs., econ., commer. | internal EU trade | intercambios intracomunitarios |
| obs., econ., commer. | internal EU trade | comercio intracomunitario |
| gen. | internal flag swap | intercambio interno de banderas |
| immigr. | internal flight option | alternativa de huida interna |
| agric. | internal force feed | alimentación forzada |
| med. | internal inhibition | inhibición externa |
| earth.sc. | internal injection | captura adiabática interna |
| UN, law | Internal Justice Council | Consejo de Justicia Interna |
| polit. | internal labour market Supply and demand for labour within a firm without direct access to the external labour market | mercado interno de trabajo (Oferta y demanda de personal en el interior de una empresa, haciendo abstracción del mercado externo de trabajo) |
| law | internal law | derecho interno |
| fin. | internal loan | empréstito nacional |
| fin. | internal loan | empréstito interior |
| gen. | Internal Macedonian Revolutionary Organization | Organización Interna Macedonia Revolucionaria - Partido de la Unidad Nacional |
| gen. | Internal Macedonian Revolutionary Organization | Movimiento Revolucionario Macedonio del Interior |
| law, commer., polit. | Internal Market Advisory Committee | Comité Consultivo de Coordinación en el Ámbito del Mercado Interior |
| comp., MS | internal network number | número de red interna (A 4-byte hexadecimal number used for addressing and routing purposes. The internal network number identifies a virtual network inside a computer. The internal network number must be unique to the IPX internetwork) |
| UN, account. | internal oversight | supervisión Interna |
| comp., MS | internal private queue | cola privada interna (For Message Queuing, a queue that stores various types of administrative messages, or an interim queue for storing and forwarding messages in transit to a destination queue. Internal private queues are not displayed in Microsoft Management Console (MMC) snap-ins, and they cannot be deleted) |
| fin., account. | internal rate of return | tipo interno de retorno |
| fin., account. | internal rate of return | tasa interna de retorno |
| fin., account. | internal rate of return | tipo de rendimiento interno |
| fin., account. | internal rate of return | tasa interna de rentabilidad |
| fin. | internal ratings-based approach | método IRB |
| fin. | internal ratings-based approach | método basado en calificaciones internas |
| mech.eng. | internal screw thread | roscado de tuerca |
| med. | internal secretion-related | endocrino |
| gen. | Internal Security Committee | Comité Permanente de Cooperación Operativa en materia de Seguridad Interior |
| gen. | internal security strategy | Estrategia de Seguridad Interior de la Unión Europea |
| comp., MS | internal self-transition | autotransición interna (A transition segment that begins and ends on the same state context, and that has neither a chained incoming transaction nor a chained outgoing transaction. This transition is a combination of the group and history transitions) |
| IT | internal storage | memoria interna |
| IT | internal storage | memoria central |
| UN, law | internal system of justice | sistema interno de administración de justicia |
| met. | internal template | plantilla hembra |
| mater.sc., industr., construct. | internal thread | filete interior |
| mech.eng. | internal thread | roscado de tuerca |
| mater.sc., industr., construct. | internal thread | filete hembra |
| cust. | internal Union transit | régimen de tránsito comunitario interno |
| cust. | internal Union transit procedure | régimen de tránsito comunitario interno |
| IT | internal unit | unidad interna |
| comp., MS | internal virtual network | red virtual interna (A virtual network that is configured to use no network adapter. Internal virtual networks are used to connect virtual machines running on the same instance of Virtual Server. All network traffic is confined to the computer running Virtual Server) |
| comp., MS | internal Web site | sitio web interno (A Web site created within an organization and available only on the intranet for that organization. An internal Web site is accessible only to members of that organization) |
| gen. | upper internals structure | estructura de la partes internas superiores |