blow - brid
- blurring of spots
- BMAW
- BNFMRA
- board
- board hammer
- board stack
- bob
- bobbin coil
- bobbin machine
- bobbing
- bod
- body
- body break
- body diagonal
- body length
- body of casting
- body of crystal
- body of roll
- body surface
- body-centered cube
- body-centered cubic alloy
- body-centered cubic ferrite
- body-centered cubic form
- body-centered cubic modification
- body-centered cubic phase
- body-centered cubic structure
- body-centered lattice
- body-centered position
- body-centered tetragonal modification
- body-section radiography
- boehmite
- BOF
- bog (iron)
- bog (iron) ore
- bogie
- bogie hearth
- bogie hearth furnace
- bohler
- Bohr atom model
- Bohr-Sommerfeld quantum theory