- trichogyne
- trichoid sensillum
- tricholoma
- trichome
- trichomoniasis
- trichomoniosis in cattle
- trichomycin
- trichosanthin
- trichospore
- trichothecene toxin
- trichotillomania
- trichotomy
- trichotomy and universal intermediary
- trichotomy composition
- trichotomy law
- trichotomy property
- trichroism
- trichromatic dyestuffs
- trichromatic system
- trichromatic vision
- trichromatism
- trichromoscope
- trichuriasis
- tricinolon
- tricircular curve