- assemble time
- assembler
- assembling bolt
- assembling shop
- assembling time
- assembly department
- assembly drawing
- assembly hall
- assembly language
- assembly scheme
- assert
- assessment
- assistant
- associate
- associate memory
- associated Press
- associative addressing
- associative criterion
- associative memory
- associative region
- associative storage
- assort
- assorted sizes
- assume
- assurance
- assurance factor
- assured flow
- assured runoff
- astatic gravimeter
- astatize
- astel
- asterisk
- asteroid
- astrolabe
- astrology
- astromic equator
- astronautic
- astronomer
- astronomical almanac
- astronomical telescope
- astronomical traverse
- asymmetric anticline
- asymmetrical
- asymmetry factor
- asymptotic
- asymptotic curve
- asymptotic value
- asymptotical relation
- asymptotical value
- asynchronous bus
- asynchronous computer
- asynchronous interrupt
- asynchronous motor
- asynchronous tie
- asynchronous working
- asystole
- AT bus
- at first
- at infinity
- at loading
- at once
- at site
- at transfer
- atency
- athermic
- atmosphere
- atmospheric
- atmospheric acoustics
- atmospheric anomaly
- atmospheric disturbance
- application bond
- application developer
- application option
- application point
- application program
- application programme
- applicator
- applied force
- apply
- appointments
- appraisal
- appreciate
- approach cone
- approach drift
- approach viaduct
- appropriate
- approving authorities
- approximate approach
- approximation
- approximative
- appurtenance
- apron conveyor
- apsidal
- apsis
- aqua ammonia
- aquadag
- arbitrarily
- arbitrary statement
- arc baffle
- arc chute