- reference group
- reference input
- reference instruction
- reference junction
- reference label
- reference language
- reference level
- reference library
- reference line
- reference liquid
- reference list
- reference listing
- reference loss
- reference lot
- reference manual
- reference mark
- reference marks
- reference material
- reference materials
- reference measurement
- reference mode
- reference model
- reference molecule
- reference network
- reference noise
- reference number
- reference oscillator
- reference page
- reference parameter
- reference path
- reference pattern
- reference peg
- reference pegs
- reference period
- reference phase
- reference picture
- reference piece
- reference plane
- reference point
- reference position
- reference potential
- reference pressure
- reference price
- reference profile
- reference range
- reference rate
- reference reactor
- reference receiver
- reference record
- reference recording
- reference retrieval
- reference room
- reference seisomometer
- reference sensibility
- reference sensitivity
- reference sensor
- reference set
- reference sign
- reference signal
- reference slip
- reference sound
- reference stake
- reference standard
- reference standards
- reference station
- reference style
- reference supply
- reference surface
- reference symbol
- reference system
- reference table
- reference tape
- reference temperature
- reference test
- reference time
- reference tone
- reference type
- reference value
- reference variable
- reference voltage
- reference volume
- reference white
- reference work
- referenced ramp
- referencing
- referendum
- referent
- referential
- referential integrity
- referment
- referral system
- referred sensation
- referredpain
- referring to
- reffectingly
- reffection
- reffective
- reffector
- reffex
- reffexibility