| Subject | English | Spanish |
| med. | delayed irregular shedding | espanomenorrea irregular |
| water.res. | exploitable: irregular renewable surface water | explotables: aguas superficiales renovables extraordinarias |
| market. | franchise irregular operation | desviación de la franquicia |
| gen. | irregular absence from service | falta de asistencia injustificada |
| med. | irregular agglutinins | aglutitinas irregulares |
| transp. | irregular application of a tariff | aplicación irregular de una tarifa |
| med. | irregular astigmatism | astigmatismo irregular (astigmatismus irregularis) |
| ocean. | irregular bottom | fondo irregular |
| transp. | irregular breaking of seal | rotura irregular de precinto |
| stat. | irregular collection | colección aleatoria |
| stat. | irregular component | componente irregular |
| textile | irregular cross section | sección transversal irregular |
| med. | irregular dominance | dominancia irregular |
| industr., construct., chem. | irregular edge | canto irregular |
| social.sc., lab.law. | irregular employment | trabajo remunerado irregular |
| social.sc., lab.law. | irregular employment | empleo irregular |
| bank. | irregular endorsement | endoso irregular |
| immigr. | irregular entry | entrada irregular |
| bot. | irregular flower | flor irregular |
| agric. | irregular forest | bosque irregular |
| met. | irregular fracture | fractura irregular |
| med. | irregular gout | gota de Garrod |
| med. | irregular gout Garrod | gota de Garrod |
| wood. | irregular grain formation | formación irregular de la fibra |
| industr., construct. | irregular grain formation | formaciones irregulares de la fibra |
| meteorol. | irregular grid | malla irregular |
| ocean. | irregular ground | fondo irregular |
| transp., construct. | irregular ground water condition | disposición irregular de las aguas subterráneas |
| med. | irregular heartbeat | torsade de pointes (francés) |
| med. | irregular heartbeat | taquiarritmia |
| gen. | irregular heartbeat | falta de ritmo regular pulso irregular |
| gen. | irregular heartbeat | forma rápida e irregular del ritmo cardíaco |
| med. | irregular heartbeat | arritmia |
| med. | irregular heartbeat drug | antiarrítmico |
| gen. | irregular heartbeat drug | medicamento para el tratamiento de la irregularidad del pulso cardíaco |
| life.sc., el. | irregular high-frequency type atmospherics | parásitos atmosféricos irregulares de alta frecuencia |
| immigr. | irregular immigrant | inmigrante ilegal |
| immigr. | irregular immigrant | inmigrante irregular |
| immigr. | irregular immigrant | inmigrante clandestino |
| law, immigr. | irregular immigration | inmigración ilegal |
| law, immigr. | irregular immigration | inmigración clandestina |
| law, immigr. | irregular immigration | inmigración irregular |
| gen. | irregular instruction | orden irregular |
| gen. | irregular instruction | orden afectada por alguna irregularidad |
| math. | irregular kollectiv | colectivo irregular |
| industr., construct., chem. | irregular lip | colada irregular |
| polym. | irregular macromolecule | macromolécula irregular |
| polit. | irregular migrant | migrante irregular |
| immigr. | irregular migrant | migrante indocumentado |
| immigr. | irregular migrant | inmigrante en situación irregular |
| immigr. | irregular migrant | migrante en situación irregular |
| polit. | irregular migrant A person without legal status in a transit or host country owing to illegal entry or the expiry of his/her visa | migrante irregular |
| obs., immigr. | irregular migrant | migrante ilegal |
| polit. | irregular migration The movement of a person to a new place of residence or transit using irregular or illegal means, without valid documents or carrying false documents | migración irregular (El traslado de una persona a un nuevo lugar de residencia o tránsito usando medios irregulares o ilegales, sin documentos válidos o portando documentos falsos) |
| polit. | irregular migration | migración irregular |
| immigr. | irregular migration | migración clandestina |
| immigr. | irregular migration | migración ilegal |
| immigr. | irregular migration | inmigración irregular |
| earth.sc., transp. | irregular movements | movimientos perturbadores |
| earth.sc., transp. | irregular movements | movimientos parásitos |
| transp. | irregular nature of the traffic | irregularidad del tráfico |
| crim.law., fin. | irregular operation of insider trading | delito de información privilegiada |
| gen. | irregular outer edge | contorno irregular del campo minado |
| polym. | irregular polymer | polímero irregular |
| immigr. | irregular presence | presencia irregular |
| met. | irregular punched shape | cortes irregulares a punzón |
| met. | irregular punching | cortes irregulares a punzón |
| chem., el. | irregular roughness | rugosidad de asperezas |
| life.sc., el. | irregular sea | oleaje con distintas frecuencias |
| immigr. | irregular secondary movement of migrants | movimientos migratoris secundarios |
| forestr. | irregular seeder | especie de fructificación irregular |
| forestr. | irregular shelterwood system | método por bosquetes de protección irregulares |
| forestr. | irregular shelterwood system | cortas sucesivas por bosquete con carácter de entresaca |
| agric. | irregular shelterwood system | aclareos sucesivos irregulares |
| agric. | irregular stand | masa irregular |
| immigr. | irregular stay | estancia irregular |
| agric. | irregular stocking | existencias relativas |
| gen. | irregular tender | oferta no conforme |
| nat.sc., agric. | irregular tooth | diente sobresaliente |
| transp. | irregular traffic | transporte ocasional |
| transp. | irregular transport | transporte ocasional |
| agric., construct. | irregular unsteady flow | flujo irregular |
| IT, dat.proc. | irregular uppercase letter | mayúscula irregular |
| industr., construct. | irregular yarn | hilado irregular |
| law | jurisdiction over complaints that enforcement is being carried out in an irregular manner | el control de la validez de las medidas de ejecución |
| immigr. | migrant in an irregular situation | inmigrante en situación irregular |
| immigr. | migrant with irregular status | inmigrante en situación irregular |
| met. | product of irregular section | producto de seccion irregular |
| law, immigr. | regularisation of irregular migrants | regularización de extranjeros |
| earth.sc., el. | rolling irregular terrain | terreno medianamente ondulado |
| met. | slag which leaves irregular areas of the weld uncovered | escoria irregular |
| met. | slag with irregular surface | escoria con superficie irregular |
| construct. | straight or irregular walls | muros tanto rectos como irregulares |
| met. | these ferrite grains have an irregular shape and interpenetrate each other | estos cristales de ferrita tienen una forma irregular y se penetran recíprocamente |
| nat.sc., agric. | wall with irregular layers | mampostería concertada |
