- bulletin
- bully
- bump test
- bumping post
- bunch filament
- bunched cables
- buncher
- bundle space
- bundled cable
- bundled software
- bunkering
- bunkers
- Bunsen photometer
- buoy ring
- buoyancy
- buoyancy principle
- burden
- bureautics
- buried abutment
- buried fault
- buried hill
- buried pipe
- buried placer
- buried tank
- buried valley
- burlap
- burly
- burn
- burn mark
- burn off
- burner
- burner oil
- burner throat
- burner tunnel
- burning heat
- burning oil
- burning velocity
- burnish
- burnishing
- burnishing gold
- burnishing stick
- burnout
- burnt
- burnt clay
- burrow
- burrstone
- burst amplifier
- burst operation
- burst phase
- burst traffic
- burst transmission
- burster
- bursting disc
- bursting disk
- bursting pressure
- bursting stress
- bursting-off
- bursty traffic
- bus
- bus controller
- bus lamp
- bus protocol
- busbar mounting
- busbar protection
- bush
- bush bearing
- bushing blower
- bushing drill
- bushing retainer
- business
- brine tank
- Brinell hardness
- bring out
- briquette
- brise-soleil
- brittle failure
- brittle lacquer
- brittle point
- brittle rupture
- broach slide
- broad pulse
- broadband
- broadcast network
- broadcast rice
- broadcast station
- broadcast videography
- broadcasting station
- broaden
- broadgage
- broadside antenna
- broken
- broken circuit
- broken stone
- bromide paper
- brominated refrigerant
- bromine refrigerant
- brooder heater
- broomstick
- brown coat
- brown-out