tridialectal
Capable of using three dialects of a language.

tridigital
three fingered.
With three numerical digits.

tridigitate
Having three fingers or finger-like projections.

tridimensional
three-dimensional

tridiminished
Having had three cupolae removed.

tridirectional
In, or relating to, three directions.

tridiurnal
Of or relating to three days.

tridoped
doped with three different elements

triduan
Lasting three days.
Happening every third day.

triduans
plural of triduan

triedral
Dated form of trihedral.

trielectronic
Of or pertaining to three electrons

trielemental
Having three different elements (in various senses).

triennial
Happening every three years.
Lasting for three years.

triennials
plural of triennial

trienoic
Describing a carboxylic acid (especially a polyunsaturated fatty acid) that has three double bonds in its chain

triequal
Equal and three in number.
Designating three successive tempered fifths that are either equal in magnitude or beat equally quickly.

trierarchal
Relating to trierarchs or trierarchy.

trierarchic
Relating to a trierarch or trierarchy.

trieteric
triennial

trieterical
Triennial: occurring once in three years.

trieterics
plural of trieteric

triexcitonic
Of or pertaining to triexcitons

triexponential
Having three summed exponential terms.

trifaceted
Having three facets

trifacial
trigeminal

trifacials
plural of trifacial

trifactor
Involving three factors

trifactorial
Of or pertaining to three factors.

trifarious
Facing three ways; arranged in three vertical ranks, like the leaves of veratrum.

trifasciated
Having, or surrounded by, three fasciae, or bands.

trifascicular
Relating to three fascicles, especially those of the heart

trife
A trivial matter or matters.

triffic
Pronunciation spelling of terrific.

trifficult
Of considerable difficulty.

triffidian
Resembling or relating to triffids ("a fictional plant able to move around and kill people with a poisonous stinger").

triffidlike
Resembling or relating to triffids ("a fictional plant able to move around and kill people with a poisonous stinger").

trifid
Divided into three lobes.

trifidate
Bifid, divided into two main parts.

trifilar
Having three wires, threads or filaments.

trifine
Of insect wings: three-veined.

triflagellate
Having three flagella

triflagellated
Having three flagella.

triflic
Related to trifluoromethanesulfonic acid or its derivatives

trifloral
Triflorous.

triflorate
Triflorous.

triflorous
Having or bearing three flowers or blooms.

trifluoracetic
Alternative form of trifluoroacetic.

trifluoromethanesulfonic
triflic

trifluoromethylated
simple past and past participle of trifluoromethylate

trifluoromethylative
That promotes trifluoromethylation

trifocal
Of or pertaining to corrective lenses that have three different powers per eye.

trifoliate
Having or comprising three leaves, or (loosely) trifoliolate (with three leaflets) or having leaves with three parts, as the clover plant.
Comprising, abounding with, or featuring trefoils.

trifoliated
Having three leaves or leaflets; trifoliate.

trifoliates
plural of trifoliate

trifoliolate
Having three leaflets, as some compound leaves do.

trifollicular
Having or involving three follicles.

triform
Having three different forms

triformed
Having a threefold form.

trifrequency
Involving three frequencies.

trifunctional
Having three functions
Having three functional groups

trifurcal
Synonym of trifurcate.

trifurcate
Forked, with three tines or points.

trigalactosylated
Modified by the addition of three galactose entities

trigamous
Living in or involving trigamy.
Having three kinds of flowers — male, female, and hermaphrodite — in the same flower head.

trigastric
Having three bellies.

trigate
Having three (electronic) gates.

trigeminal
Of or pertaining to the trigeminal nerve (the fifth cranial nerve).

trigeminalgia
Synonym of trigeminal neuralgia.

trigeminals
plural of trigeminal

trigeminate
Having three pairs.

trigemini
plural of trigeminus

trigeminocardiac
Relating to the trigeminal nerve and the heart

trigeminocerebellar
Of, pertaining to or connecting the trigeminal nerve and the cerebral cortex

trigeminocervical
Relating to the trigeminal nerve and the cervix

trigeminofacial
Relating to the trigeminal nerve and the face

trigeminohypothalamic
Relating to the trigeminal nerve and the hypothalamus.

trigeminoreticular
trigeminal reticular

trigeminospinal
trigeminal and spinal

trigeminothalamic
trigeminal and thalamic

trigeminous
born three together; being one of three born at the same birth
threefold

trigeminovascular
Relating to the trigeminal nerve and blood vessels

trigeminus
Alternative form of trigeminal nerve.

trigender
Having or pertaining to three genders.

trigenerational
Relating to three generations.

trigenerative
Relating to trigeneration

trigeneric
Of or relating to three genera.

trigenic
produced by (the interaction of) three genes

trigenomic
Derived from three genetically-similar organisms

trigenous
Involving groups of three; arranged in threes.

triggerable
That may be triggered.

triggerish
Likely to be triggered or set off.
Likely to trigger or set off something.

triggerless
Without a trigger.

triggerlike
Resembling or characteristic of a trigger.

trigintaduonionic
Of or pertaining to a trigintaduonion.

trigintennial
Synonym of tricennial, once every thirty years.

triglandular
Having or relating to three glands.

trigloid
Resembling the fish genus Trigla.

triglossic
Of or relating to triglossia.

triglot
A trilingual person.

triglots
plural of triglot

triglottic
In or relating to three languages.

triglucosylated
glycosylated with three molecules of glucose

trigluon
Of or relating to three gluons.

triglyceridemic
Relating to triglyceridemia

triglycosylated
glycosylated with three sugar moieties

triglyphal
Synonym of triglyphic.

triglyphed
Having the form of a triglyph.

triglyphic
Consisting of, or relating to, triglyphs.
Containing three glyphs

triglyphical
Synonym of triglyphic.

trigometric
Nonstandard form of trigonometric.

trigonal
Having three angles and three sides, triangular.
Of or pertaining to a crystal system with three equal and equally inclined but not perpendicular axes.
Relating to the trigone

trigoneutic
Having three broods per season.

trigoniaceous
Of or relating to the Trigoniaceae.

trigonic
Relating to a trigon or triangle.

trigonocephalic
Of or relating to trigonocephaly.

trigonodont
tritubercular

trigonometric
of, relating to, or constructed using trigonometry

trigonometrical
Of, pertaining to, or obtained using trigonometry

trigonous
trigonal; triangular

trigrammatic
Containing three letters or characters, or three sets of letters or characters.

trigraphic
Of or relating to a trigraph.

triguttulate
Having three guttules.

trigynous
Having three pistils or styles.

triharmonic
Describing a class of sixth-order partial differential equations which arises in areas of continuum mechanics

trihelical
Relating to or composed of three helices.
Relating to a trihelix.

trihemeral
Relating to a period of three days.

triheteromeric
Having, or relating to, three different types of subunits.
Relating to a triheteromer.

trihilate
Having three apertures, like some grains of pollen.

triholomorphic
trijective and holomorphic

trihoral
Occurring once in every three hours.

trihourly
Three times an hour.

trihydrated
Combined with three molecules of water

trihydric
Having three hydroxy groups.

trihydroxybenzoic
Relating to trihydroxybenzoic acids.

trihydroxylated
Modified by the addition of three hydroxyl groups

trihypostatic
Of or relating to the three persons or hypostases of the Trinity.

trijective
Relating to a trijection

trijugate
In three pairs.

trikaryotic
Having three nuclei

trilabiate
three-lipped

trilacunar
Having or relating to three lacunae.

trilamellar
Having three lamellae.

trilamellate
Synonym of trilamellar.

trilamellated
Synonym of trilamellar.