- analogue method
- analogue simulation
- analogy computer
- analogy method
- analyser
- analyst
- analyst-programmer
- analytic balance
- analytic extension
- analytic function
- analytic mapping
- analytical engine
- analytical graphic
- analytical graphics
- analytical method
- analytical ultracentrifuge
- analyzer
- ancestral
- anchor bar
- anchor blocks
- anchor bolt
- anchor charge
- anchor line
- anchor log
- anchor plate
- anchor point
- anchor post
- anchor rod
- anchor rope
- anchor shackle
- anchor shoe
- anchor stone
- anchor support
- anchor tie
- anchor washer
- anchor-socket
- anchorage
- anchorage block
- anchorage device
- anchorage pier
- anchorage-ground
- anchoring cone
- anchoring plate
- anchoring point
- anchoring screw
- ancient
- ancillary
- ancillary building
- ancillary equipment
- ancillary system
- AND core
- and mark
- aneroid capsule
- anfused sea
- angel dozer
- angiogenesis
- angle bar
- angle block
- angle closer
- angle file
- angle joint
- angle post
- angle valve
- anglepoise lamp
- angular break
- angular deviation
- angular length
- angular observation
- angular strain
- angularity
- angulus
- anharmonic
- anicut
- animal husbandry
- animated sequence
- anion
- anisotropic
- anisotropy energy
- annealed copper
- annealing furnace
- annealing point
- annex
- annihilate
- annihilator
- annual
- annual anomaly
- annual intensity
- annual runoff
- annul
- annular eclipse
- annulment
- annulus
- annuneiator
- anodizing
- anodyne
- anomalous
- anomalous moment
- anopsia
- answer lamp
- answer signal