| Subject | Spanish | English |
| transp., construct. | abertura rectangular | rectangular port |
| transp., construct. | abertura rectangular | rectangular opening |
| tech. | ala rectangular | rectangular wing |
| tech. | amplificador de impulsos rectangulares | gated pulse amplifier |
| tech. | amplificador de pulsaciones rectangulares | gated pulse amplifier |
| el. | anchura de banda rectangular | rectangular bandwidth |
| agric. | apilado rectangular | box stacking |
| agric. | apilado rectangular | box-end stacking |
| agric. | apilado rectangular | box-end piling |
| agric. | apilado rectangular | box piling |
| agric., mech.eng. | aspersor de difusión rectangular | rectangular area sprinkler |
| el. | banda de paso rectangular | rectangular pass band |
| agric., mech.eng. | barra de sección rectangular | box section frame |
| antenn. | bocina rectangular compuesta antena | compound rectangular horn antenna |
| comp., MS | botón Molde rectangular | Rectangle Pan Button (A button on the Comfy Cakes game interface that allows the player to select a rectangular pan to bake their cake in) |
| gen. | caja cónica con tubo de cadena de sección rectangular | bevel box with rectangular section chain tube |
| automat. | calidad de la forma rectangular | loop rectangularity |
| construct. | canal de sección rectangular sobre apoyos | box flume |
| construct. | canalón rectangular | box gutter |
| construct. | canalón rectangular | box-type gutter |
| el. | característica de corte rectangular | square cut-off characteristic |
| gen. | chorro rectangular | rectangular jet |
| telecom. | codo rectangular de cable coaxial de conductor interior con soporte de cuarto de onda | stub angle |
| el. | conector rectangular | rectangular connector |
| construct. | construcción de armazón de vigas huecas rectangulares | box section frame construction |
| tech. | coordenada rectangular | rectangular coordinate |
| stat. | coordenadas cartesianas rectangulares | rectangular cartesian coordinates |
| stat. | coordenadas cartesianas rectangulares | rectangular coordinates |
| UN, cartogr. | coordenadas rectangulares | grid |
| life.sc. | coordenadas rectangulares | grid coordinates |
| tech. | coordenadas rectangulares | rectangular coordinates |
| rem.sens. | coordenadas rectangulares del plano | plane coordinates |
| rem.sens. | coordenadas rectangulares del plano | plane rectangular coordinates |
| life.sc. | cortadura rectangular | sheet lines system |
| agric. | criba de orificios rectangulares | screen with rectangular perforations |
| industr., construct. | cuadrante rectangular arqueado | cambered rectangular dial |
| chem. | cuerpo de calefacción rectangular | frame heater |
| tech. | cuña rectangular | flat key |
| antenn. | cátodo rectangular | rectangular cathode |
| mater.sc. | célula rectangular | rectangular storage bin |
| mater.sc. | célula rectangular | square storage bin |
| mater.sc. | célula rectangular | round storage bin |
| mater.sc. | célula rectangular | polygonal storage bin |
| math. | damero rectangular | rectangular lattice |
| el. | densidad espectral de un impulso rectangular | spectral density of a rectangular pulse |
| tech. | depósito rectangular | box magazine (de municiones) |
| construct. | desagüe de sección rectangular | box culvert |
| environ. | desarenador rectangular | rectangular grit chamber |
| environ. | desarenador rectangular aireado | rectangular aerated grit channel |
| industr. | desbaste cuadrado o rectangular | bloom |
| agric., construct. | disposición rectangular | rectangular layout of nozzles |
| construct. | disposición rectangular de un drenaje | rectangular drainage pattern |
| math. | distribución rectangular | uniform distribution |
| math. | distribución rectangular | rectangular distribution |
| math. | distribución rectangular discreta | discrete rectangular distribution |
| mech.eng., construct. | dren de sección rectangular | box drain |
| tech. | emplazamiento rectangular | rectangular pit emplacement |
| mater.sc., industr., construct. | envase metálico rectangular | oblong can |
| mater.sc., industr., construct. | envase metálico rectangular | rectangular can |
| pack. | envase metálico rectangular | F-style can |
| mater.sc., industr., construct. | envase rectangular | oblong can |
| mater.sc., industr., construct. | envase rectangular | rectangular can |
| pack. | envase metálico rectangular | oblong can |
| pack. | envase metálico rectangular | square can |
| pack. | envase metálico rectangular | rectangular can |
| construct. | eras rectangulares | rectangular checks |
| tech. | escariador rectangular | angle drift |
| math. | esquema de asociación rectangular | rectangular association scheme |
| tech. | ferrita de bucle rectangular | square loop ferrite |
| el. | filtro de característica rectangular | rectangular filter |
| tech. | formador de onda rectangular | square wave shaper |
| el. | guiaonda rectangular | rectangular waveguide |
| commun. | guía de ondas rectangulares | rectangular wave guide |
| mech.eng. | guía de sección rectangular | square slide |
| mech.eng. | guía de sección rectangular | flat way |
| fin., polit., met. | hierro y acero en desbastes cuadrados o rectangulares "blooms" y palanquilla | blooms, billets, slabs and sheet bars including tinplate bars of iron and steel |
| commun. | impulsión rectangular | square pulse |
| el. | impulso rectangular | rectangular pulse shape |
| el. | impulso rectangular | rectangular pulse |
| earth.sc., el. | impulso rectangular | square pulse |
| el. | impulso rectangular de corriente continua | rectangular d.c.pulse |
| earth.sc., mech.eng. | junta de sección cuadrada o rectangular | square seal |
| mater.sc., industr., construct. | lata rectangular | oblong can |
| mater.sc., industr., construct. | lata rectangular | rectangular can |
| pack. | lata rectangular | F-style can |
| pack. | lata rectangular | square can |
| tech. | lima rectangular | pillar file |
| gen. | listón rectangular | batten |
| gen. | listón rectangular | rectangular lath |
| el. | línea de varilla rectangular | slab line |
| el. | líneas de longitud variable conmutadas por impulsos rectangulares | path length rectangular-pulse switching |
| industr. | madera de sección rectangular | rectangular wood block |
| el. | matriz rectangular | rectangular matrix |
| math. | matriz rectangular | rectangular array |
| tech. | núcleo rectangular de ferrita | square loop ferrite |
| commun., el. | onda rectangular | rectangular wave |
| tech. | onda rectangular | square wave |
| life.sc. | ondas rectangulares de corriente | current square waves |
| agric. | orificio de salida rectangular | rectangular slot |
| agric. | orificio de salida rectangular | slot with rectangular section |
| agric. | orificio de salida rectangular | rectangular orifice |
| tech. | orificio rectangular de ventilación del motor | rectangular engine vent |
| tech. | patrón de aproximación rectangular | rectangular box pattern |
| construct. | perfiles metálicos de sección rectangular | metallic rectangular profiles |
| construct. | pilar rectangular | rectangular column |
| math. | pirámide rectangular | rectangular pyramid |
| mech.eng. | placa magnética rectangular para sujeción | rectangular magnetic chuck |
| mech.eng. | placa rectangular | rectangular plate |
| forestr. | plantación rectangular | rectangular planting |
| el. | potenciómetro de cinta rectangular de resistencia | rectangular card potentiometer |
| math. | prisma rectangular | rectangular prism |
| gen. | progresión rectangular | box method |
| comp., MS | píxel rectangular | rectangular pixel (A pixel that generally has an aspect ratio of 3:4, 32:27, or 8:9, meaning that it is slightly less tall than it is wide, or vice versa. Nonsquare pixels are standard in digital video) |
| math. | retìculo rectangular | rectangular lattice |
| stat. | retículo rectangular | rectangular lattice |
| stat. | retículo rectangular latinizado | latinized rectangular lattice |
| mech.eng. | rosca rectangular | square thread |
| el. | sección transversal rectangular | box section |
| el. | señal rectangular | rectangular signal |
| el. | señal transmitida de impulsos rectangulares | rectangular pulse transmitted signal |
| mech.eng., construct. | sifón de sección rectangular | box syphon |
| mech.eng., construct. | sifón de sección rectangular | box section syphon |
| health. | silenciador rectangular | rectangular attenuator |
| med. | sistema de llenado con forma de clavija rectangular | rectangular keyed filling system |
| commun. | subportadora rectangular | rectangular subcarrier |
| med. | sutura rectangular doble | double rectangular suture |
| math. | sólido rectangular | rectangular solid |
| earth.sc., el. | terminal de lengüeta rectangular | rectangular tongue terminal |
| weap. | transportador rectangular | rectangular protractor |
| el. | tren de impulsos rectangulares | rectangular pulse train |
| el. | unidad de resolución de carta rectangular | flat card resolver |
| tech., construct. | vertedero rectangular | rectangular weir |
| environ. | vertedero rectangular con contracción lateral | rectangular constricted weir |
| environ. | vertedero rectangular sin contracción lateral | rectangular non-constricted weir |
| construct. | viga rectangular | hollow box |
| construct. | viga rectangular | box girder |