rais - reed
- raise
- raised
- raised area
- raised portion
- raised printing
- raising
- rake
- rake angle
- ram
- ram clearance
- ram extruder
- ram guide
- ram guiding
- ramification
- ramification problem
- random
- random access
- random access store
- random distribution
- random failure
- random feed
- random fluctuations
- random noise
- random number
- random number generator
- random numbers
- random processing
- random sales variations
- random sample
- random sampling
- random scan
- random sensitivity
- random test
- random variable
- random winding
- random-access inventory system
- random-access memory: RAM
- random-access store
- random-incidence response
- randomization
