an

=> a2.

amphetamine, amphi-, amphibian, amphibious, amphitheatre (US -ter), ample, amplification, amplifier, amplify, amplitude, amply, ampoule (US also ampule), amputate, amputation, amuck, amulet, amuse, amused, amusement, amusing, anachronism, anachronistic, anaconda, anaemia (US anemia), anaemic (US anemic), anaerobic, anaesthesia, anaesthetic (US anesthetic), anaesthetics, anaesthetist (US anesthetist), anaesthetize, -ise (US anesthetize), anagram, anal, analgesia, analgesic, analog, analogous, analogously, analogue, analogue (US analog),