| acrescentar | add |
| acrescentar de graça | addition |
| acrescente | accrescent |
| acrescer | accrue |
| acrescível | accruable |
| acretivo | accretive |
| acreção | accretion |
| acridez | roughness |
| Acrididae | Acrididae |
| acridina | acridine |
| acrilamida | acrylamide |
| acrilato | acrylate |
| acrilonitrila | acrylonitrile |
| acrilonitrilo | acrylonitrile |
| acrimoniosamente | acrimoniously |
| acrimonioso | vitriolic |
| ACRIMSat | Active Cavity Radiometer Irradiance Monitor Satellite |
| acrimónia | acrimony |
| acrimônia | bitterness |
| acritarca | acritarch |
| acriticamente | acritically |
| acrivastina | acrivastine |
| acroasfixia | acroasphyxia |
| acrobacia | acrobatics |
| acrobacia aérea | aerobatics |
| acrobaciaaérea | acrobatics |
| acrobata | acrobat |
| acrobatao | tumblercs |
| acrobaticamente | acrobatically |
| Acrobatidae | Acrobatidae |
| acrobático | acrobatics |
| Acrocantossauro | Acrocanthosaurus |
| acrocefalia | acrocephaly |
| acrocefalosindactilia | acrocephalosyndactylia |
| Acrocephalus | Acrocephalus |
| Acrocephalus kerearako | Cook Islands Reed-warbler |
| Acrocephalus rimatarae | Rimatara Reed-warbler |
| Acrocephalus rodericanus | Rodrigues Warbler |
| Acrocephalus rufescens | Greater Swamp-warbler |
| acroceratose | acrokeratosis |
| Acrochordidae | Acrochordidae |
| acrocianose | acrocyanosis |
| Acrocomia aculeata | Acrocomia |
| acrocêntrico | acrocentric |
| acrodermatite | acrodermatitis |
| acrodermatose | acrodermatosis |
| acrodextrina | achrodextrin |
| acrodinia | acrodynia |
| acrodonte | acrodont |
| acrodínico | acrodynic |
| acrofase | acrophase |
| acrofobia | fear of heights |
| acrofonia | acrophony |
| acrofóbico | acrophobic |
| acrofónico | acrophonical |
| acrofônico | acrophonical |
| acrogeria | acrogeria |
| acrolectal | acrolectal |
| acrolecto | acrolectss |
| Acrolepiidae | Acrolepiidae |
| acroletal | acrolectal |
| acroleto | acrolect |
| acroleína | acrolein |
| acromatopsia | achromatopia |
| acromegalia | acromegaly |
| acromegálico | acromegalic |
| acromia | achromia |
| acromial | acromial |
| acromioclavicular | acromioclavicular |
| acromotriquia | achromotrichia |
| acromático | achromatic |
| acronologicamente | achronologically |
| acronológico | achronological |
| acropetal | acropetal |
| Acropomatidae | Acropomatidae |
| Acroptilon | Russian knapweed |
| acroscópico | acroscopic |
| acrosina | acrosin |
| acrossomal | acrosomal |
| acrossomo | acrosome |
| acrosticamente | acrostically |
| acrotomofilia | acrotomophilia |
| acrotério | acroterium |
| Acrux | Alpha Crucis |
| acrático | akratic |
| acréscimo | addition |
| acrílico | acrylic |
| Acrísio | Acrisius |
| acrítico | acritical |
| acrófobo | acrophobic |
| acrógeno | acrogenous |
| acrómio | acromion |
| acrópole | acropolis |
