tribology
The science and engineering of interacting surfaces in relative motion; the study and application of technology using the principles of friction, lubrication and wear.

triboluminescence
The production of light by friction.

tribometry
The measurement of friction on a surface, as carried out with a tribometer.

tribool
A variable that behaves similar to a Boolean, but allows three values instead of two.

tribools
plural of tribool

tribophysics
The physics of friction.

tribopolymerization
The formation of tribopolymers by surface rubbing.

tribopolymerizations
plural of tribopolymerization

triboreaction
A reaction initiated by surface friction

triboreactions
plural of triboreaction

tribosystem
Any system of tribological components (such as bearings).

tribosystems
plural of tribosystem

tribothere
One of a group of extinct tribosphenic marsupial-like therians.

tribotheres
plural of tribothere

tribothermoluminescence
Thermoluminescence resulting from friction.

tribulation
Any adversity; a trying period or event.

tribulations
plural of tribulation

tribunate
The state or office of a tribune.

tribunates
plural of tribunate

tribuneship
The office of tribune
The period in which a person serves as tribune

tributariness
The quality or state of being tributary.

tricadecaphobia
Misspelling of triskaidekaphobia.

tricae
plural of trica

tricameralism
The practice of having three legislative or parliamentary chambers.

tricenarian
The highest rank and pay grade for prefectures in Ancient Rome.
A person in their thirties, a person aged between 30 and 39 years (inclusive).

tricenarians
plural of tricenarian

tricennal
Synonym of trental, set of 30 requiem masses, the payment for such services.

tricennals
plural of tricennal

tricennia
plural of tricennium

tricennium
A period of thirty years.

tricenniums
plural of tricennium

tricent
A li, a traditional Chinese unit of distance equal to 1500 chis or 150 zhangs, now standardized as a half-kilometer (500 meters).

tricesimation
A one-thirtieth tax introduced in the Duchy of Württemberg in 1691.

trichiliocosm
A concept in cosmology of a "third-order" universe containing one thousand second-order clusters, which are made of one thousand first-order clusters, which are in turn made of a thousand worlds each. Billion-fold universe.

trichiliocosms
plural of trichiliocosm

trichinophobia
A morbid fear of trichinosis.

trichirubine
Any of a group of limonoids present in Trichilia rubescens

trichirubines
plural of trichirubine

trichlorobiphenyl
Either of twenty-four isomers of the polychlorinated biphenyl containing three chlorine atoms

trichlorobiphenyls
plural of trichlorobiphenyl

trichlorodiphenyls
Misspelling of trichlorobiphenyls.

trichocephaloses
plural of trichocephalosis

trichocephalosis
A form of helminthiasis caused by the whipworm Trichocephalus trichiurus

trichodermol
A particular fungal sesquiterpene.

trichodragma
A sheaf or bundle of raphides.

trichodynia
A painful sensation on the scalp, often with an underlying psychosomatic cause such as stress.

trichogram
A microscopic examination of the root of a hair.

trichograms
plural of trichogram

trichology
The science or study of hair.

trichomics
The study of trichomes

trichonodosis
A condition involving knots in the hair.

trichophagia
Compulsive eating of hair.

trichophilia
A paraphilia in which one is sexually aroused by, or extremely fond of, human hair.
Any hair-related fetish.

trichoscopy
A method of hair and scalp evaluation based on dermoscopy and videodermoscopy.

trichotomies
plural of trichotomy

trichotomism
The belief that human beings are made up of three distinct components: body or flesh, soul, and spirit.

trichotomization
division into three parts

trichotomizations
plural of trichotomization

trichotomy
Division or separation into three groups or pieces.
the property of an order relation whereby, given an ordered pair of elements (of a given algebraic structure), exactly one of these is true: the first element is 'less than' the second one, the second is 'less than' the first, or the two elements are equal.

trichroism
The property of some optically anisotropic crystals of transmitting different colours of light in three different spatial directions.

trichromacies
plural of trichromacy

trichromacy
The quality of having three independent channels for conveying color information in the eye.

trichromaticity
The quality of being trichromatic.

trickdom
The world or realm of tricks.

trickeration
Trickery.

trickerations
plural of trickeration

trickeries
plural of trickery

trickery
Deception, deceit or underhanded behavior.
The art of dressing up; imposture, pretense.
Artifice; the use of one or more stratagems.

trickiness
The quality of being tricky.

trickinesses
plural of trickiness

trickishness
The quality of being trickish.

tricklet
A little trickle.

tricklets
plural of tricklet

tricklining
A form of slacklining involving tricks and stunts.

trickment
decoration; ornament

trickments
plural of trickment

tricksiness
The quality or state of being tricksy.

tricksinesses
plural of tricksiness

tricksterism
The use of a trickster character in folk literature.
The philosophical position of being a trickster.

triclavianism
The belief that three nails were used in the crucifixion of Jesus Christ.

tricodon
A group of three codons

tricodons
plural of tricodon

tricoherence
The condition of four waves having the same wavelength and phase

tricompetence
The state or quality of being tricompetent.

tricomplexity
The condition of being tricomplex

triconcepts
plural of triconcept

triconodonty
The property of having teeth with three conical cusps.

triconsonantalism
The property of being triconsonantal.

tricontinentalism
The condition of being tricontinental

tricotomy
Misspelling of trichotomy.

tricriteria
plural of tricriterion

tricriterion
Any of three criteria in the same system

tricriticalities
plural of tricriticality

tricriticality
The condition of being tricritical; a tricritical system

tricrotism
The condition of the arterial pulse in which there is a triple beat, so that the pulse curve shows two secondary crests in addition to the primary one.

tricube
A polycube composed of three cubes.

tricubes
plural of tricube

triculturalism
The state or quality of being tricultural.

tricylinder
A solid formed by three intersecting cylinders.

tricylinders
plural of tricylinder

tridactyly
The property of being tridactyl; having three digits (fingers or toes) on a limb.

tridecagon
A polygon having thirteen sides and thirteen angles.

tridecagons
plural of tridecagon

tridecagram
A star polygon that has thirteen vertices.

tridecagrams
plural of tridecagram

tridecahedra
plural of tridecahedron

tridecahedron
A polyhedron with thirteen faces.

tridecahedrons
plural of tridecahedron

tridecaphobia
Alternative form of triskaidekaphobia.

tridegree
The condition of being cubic

tridemic
Synonym of tripledemic (“a combination of three pandemics”).

tridemics
plural of tridemic

trideo
A three-dimensional video.
Synonym of tri-V (“a system capable of recording or displaying three-dimensional video”).

trideos
plural of trideo

tridiagonality
The condition (of a matrix) of being tridiagonal

tridiagonalization
The formation of a tridiagonal matrix

tridiagonalizations
plural of tridiagonalization

tridialectalism
The use of three dialects of a language.

tridiapason
A triple octave, or twenty-second.

tridim
Synonym of trideo (“a three-dimensional video”).
Synonym of tri-V (“a system capable of recording or displaying three-dimensional video”).

tridimensionality
The quality of being tridimensional.

tridims
plural of tridim

tridua
plural of triduum

triduum
A period of three days (especially in Roman Catholic liturgy).

triduums
plural of triduum

triecy
Alternative form of trioecy.

triennia
plural of triennium

triennium
A period of three years.

trienniums
plural of triennium