| Aconcagua | Aconcagua |
| Aconcagua River | Río Aconcagua |
| aconite | aconit |
| Aconitum | Aconitum |
| Aconitum anthora | Aconit Anthore |
| Aconitum napellus | Aconit napel |
| Acontius | Acontios et Cydippe |
| Acoraceae | Acoraceae |
| Acorales | Acorales |
| acorn | gland |
| Acorn Archimedes | Archimède |
| Acorn Computers | Acorn |
| acorn woodpecker | pic glandivore |
| Acorn worm | Enteropneusta |
| acorn-bearing | balanifère |
| acotyledon | acotylédone |
| acotyledonous | acotylédone |
| Acouchi | Myoprocta |
| Acousmatic art | Musique acousmatique |
| acoustic | acoustique |
| Acoustic bass guitar | Guitarron |
| acoustic comfort | confort acoustique |
| acoustic filter | filtre acoustique |
| acoustic guitar | guitare acoustique |
| acoustic insulation | isolation acoustique |
| acoustic level | niveau acoustique |
| acoustic property | propriété acoustique |
| Acoustic waves | Onde acoustique |
| acoustical | acoustique |
| acoustical quality | qualité acoustique |
| acoustically | acoustiquement |
| acoustics | acoustique |
| ACP countries | Pays ACP |
| Acq | Acq |
| acquaint with | renseigner sur |
| acquaintance | relation |
| acquainted with | renseigné sur |
| Acquarossa | Acquarossa |
| Acqui Terme | Acqui Terme |
| acquiesce | acquiescer |
| acquiesce in | se conformer à |
| acquiescence | respect |
| acquiescent | complaisant |
| acquiescing | acceptant |
| Acquin-Westbécourt | Acquin-Westbécourt |
| acquirable | acquérable |
| acquire | recevoir |
| acquire a taste for | prendre goût à |
| acquired | acquis |
| acquired immune deficiency syndrome | syndrome d'immunodéficience acquise |
| acquired taste | goût qui s'acquiert |
| Acquis communautaire | Acquis communautaire |
| acquisition | achat |
