- barren spot
- barrier island
- barrier reef
- barrier separation
- barrier system
- barysphere
- baryum
- basal cleavage
- basal section
- basaltic glass
- basaltic jointing
- basaltiform
- base
- base cation
- base explosion
- base level
- base number
- base oil
- base plane
- base royalty
- basement uplift
- basic addition
- basic chloride
- basic cinder
- basic metal
- basic process
- basicity
- basify
- basket
- basswood oil
- bast fiber
- bastard coal
- batch
- batch drier
- batch still
- bate
- bath
- bath pickling
- bathonian stage
- bathymetry
- bating
- battery bench
- battery carbon
- battery electrolyte
- battery hut
- battery voltage
- bauxite process
- bay-salt
- bayberry oil
- bdellium
- beach cusp
- beach drift
- beach reef
- beach rock
- beaconage
- beaded texture
- basophilic
- bast
- batch distillation
- batch rectification
- bath soap
- batholith
- bathymetric chart
- battery
- baulk
- bay-mouth
- bayberry wax
- bead
- beading press
- beaker
- beam pump
- beam pumper
- bearing box
- bearing bracket
- bearing liner
- bearing wall
- Beaumont oil
- bed pinchout
- bed plate
- bed vein
- bed-mining
- bedded clay
- bedding
- bedding deposition
- bedding joint
- bedding plant
- beechnut oil
- beef fat
- beet sugar
- bell
- bell value
- belt drive
- belt pulley
- belting
- Ben oil
- bench gas
- bench gravel
- bench roller
- bench stooping
- bench test