apis - at day
- Ascap American Society of Composers Authors and Publishers
- ascend
- ascend lineally
- ascendancy
- ascendant
- ascendent
- ascending
- ascending aorta
- ascending scale
- ascension
- Ascension-day
- ascensional
- ascensional power aeron.
- ascensional rate aeron.
- Ascensiontide
- ascent
- ascertain
- ascertainment
- ascetic
- asceticism
- ASCII American standard code for information interchange
- ascorbic
- Ascot
- ascribe
- ascription
- ASDIC Anti-Submarine Detection Investigation Committee
- ASEAN Association af South-East Asia Nations
- asepsis
- aseptic
- asexual
- asf and so forth
- asgd assigned
- asgmt assignment
- ash
- ash bunker
- ash can
- Ash Wednesday
- ash-bin
- ash-blond
- ash-box