rais - reed
- recessed parts
- recessing tool
- recession
- rechargeable
- recipe
- reciprocal
- reciprocating
- reciprocating engine
- reciprocating motion
- reciprocation
- reciprocity coefficient
- reciprocity principle
- reciprocity theorem
- recital
- reclining
- recoding
- recombination
- recombination rate
- recommendation
- recompatibility
- recompatible
- reconfiguration
- reconstruction
- record
- record ballast arm
- record button
- record changer
- record company
- record dia scanner
- record dia selector cancelling arm
- record dia selector housing
- record dia selector lever
- record dia sensor
- record diameter scanner
- record drop
- record dropping mechanism
- record eccentricity
- record gap
- record head
- record identification code
