- triple product identity
- triple quadrupole
- triple quasar
- tripler
- triple root
- triple scalar product
- triple sequence
- triple series
- triple stage quadrupole mass spectrometer
- triple-stage quadrupole mass spectrometer
- triple-stage quadrupole mass spectrometer (TSQ-MS)
- triple star
- triple state
- triple superphosphate
- triple system
- trip-let
- triplet
- triple tangent
- triplet code
- Triple-Threats in musicals
- Triple Three System
- triplet lens
- triplet of primes
- triplet pairing
- triple-triple annihilation