| aclamacion | explanation |
| aclamación | acclaim |
| aclamar | applaud |
| aclaración | clarification |
| aclarado | tow-haired |
| aclaramiento | clearing |
| aclarar | clear |
| aclarar sobre | enlighten about |
| aclaratorio | explanatory |
| Aclens | Aclens |
| aclimatación | acclimatization |
| aclimatar | acclimatize |
| aclimatarse | adapt |
| Aclou | Aclou |
| aclínico | aclinic |
| Acmella oleracea | Acmella oleracea |
| Acmón | Acmon |
| acné | acne |
| acobardado | nerveless |
| acobardamiento | cowardice |
| acobardar | overawe |
| acobardarse | blench |
| Acobrado | Brassy tone |
| Acochambrar | Soil |
| Acocil | Acocil |
| acodado | cranked |
| Acoelomata | Body cavity |
| Acoelomorpha | Acoelomorpha |
| acogedor | attractive |
| acoger | get |
| acogida | party |
| Acojinamiento | Back draught |
| Acojonante | A-OK |
| acolchado | quilted |
| acolchar | pad |
| acollador | lanyard |
| Acollararse | Affix |
| Acolnahuácatl | Acolnahuacatl |
| ACOLOP | ACOLOP |
| Acoma | Acoma Pueblo |
| acometer | attack |
| acometida | enterprise |
| acometividad | aggressivity |
| acomodable | adaptive |
| acomodación | accommodation |
| acomodadizo | easy |
| acomodado | substantial |
| Acomodado a | Fitted with |
| acomodador | usher |
| acomodadora | usherette |
| acomodamiento | descendants |
| acomodar | adapt |
| acomodarse | nestle |
| acomodarse a | comport |
| acomodaticio | conciliatory |
| acomodo | employment |
| acompa ar | accompany |
| acompañada | ridealong |
| acompañado por | in the company of |
| Acompañador | Traveling companion |
| acompañamiento | accompaniment |
| acompañante | escort |
| acompañante de señorita | chaperon |
| Acompañantes | Order |
| acompañar | join |
| acompãnamiento | chaperonage |
| acomunarse | ally |
| Acomys | Spiny mouse |
| Aconcagua | Aconcagua |
| Aconchabamiento | Concord |
| Aconcharse | Beach |
| acondicionador | conditioner |
| acondicionador de aire | air conditioner |
| Acondicionador de escaparates | Display work |
| acondicionador mineral | mineral conditioner |
| acondicionamiento de aire | air-conditioning |
| acondicionamiento del aire | air-conditioning |
| acondicionamiento del producto | preparation for market |
| acondicionamiento mineral | mineral conditioner |
| acondicionar | soup up |
| Acondrita | Achondrites |
| acondroplasia | achondroplasia |
| acongojado | distressed |
| acongojar | distress |
