Skip to content A B C D E F G H I J K L M N O P Q R S T U V W X Y Z tristesse sadness tristetrahedral Having the form of a tristetrahedron. tristetrahedron Synonym of triakis tetrahedron. tristetraprolin Any of a particular family of zinc finger proteins tristeza A damaging viral disease of citrus plants, caused by Closterovirus. tristful Sad, melancholic. tristfully in a tristful manner; sadly. tristfulness sadness; sorrow; melancholy Tristian A male given name. tristich A tercet. tristichopterid Any extinct fish in the family Tristichopteridae. tristichous Arranged in three vertical rows. tristigmatic Having, or consisting of, three stigmas. tristimulus A set of three stimuli, especially the red, green and blue components of colour vision. Tristin A male or female given name of modern usage. tristitiate To sadden. Triston A male given name. Tristram A male given name from the Celtic languages, variant of Tristan. tristramite A hexagonal-trapezohedral mineral containing calcium, hydrogen, iron, oxygen, phosphorus, sulfur, and uranium. tristratified Divided into three layers. tristratose Composed of three cell layers tristrip A strip formed by joining triangles. tristrontium Three atoms of strontium in a chemical compound. tristropha A neume that trebles the value of the first note in a series. tristylous Having three style morphs. tristyly The condition of being tristylous trisubstituted substituted with three (identical or different) substituents trisubstitution Any substitution reaction in which three groups are substituted. trisula A trident, seen as a religious symbol of Hinduism and Buddhism. trisulc Something having three forks or prongs, especially a trident. trisulcate Having three sulci or grooves. trisulcated Synonym of trisulcate. trisulfate Any compound containing three sulfate groups or ions trisulfated Modified by the addition of three sulfate groups trisulfide Any sulfide containing three atoms of sulfur. trisulfoaluminate Any mineral composed of three sulfate groups for each aluminate group trisyllabic having three syllables trisyllabical trisyllabic; of three syllables. trisyllabically In three syllables. trisyllabicity The property of having three syllables. trisyllabism The quality of being trisyllabic, or having three syllables. trisyllable A word of three syllables. trisynaptic Involving three synapses. trit The ternary equivalent of a bit; a fundamental unit of information that may take any of three distinct states. Trita A mythical hero in the Proto-Indo-Iranian religion and its descendants tritactic Describing a tactic polymer that has three sites of stereoisomerism in its chain Tritaea A town of Achaia and member of the Achean league tritagonist In Greek drama, the actor who played the third role (after the protagonist and deuteragonist) tritan A person who has tritanopia or tritanomaly. tritangent A line that is tangent to a curve at three points. tritangential Relating to a tritangent. tritanol Triphenylmethanol. tritanomalous Having or relating to tritanomaly. tritanomaly A rare form of colour blindness in which the short-wavelength pigment is shifted towards the green area of the spectrum. tritanope One who has tritanopia. tritanopia A form of color blindness in which the retina is deficient in or lacks cone cells containing opsins that respond to the color blue, resulting in an inability to distinguish blue from green. tritanopic Relating to tritanopia. tritantalum Three tantalum atoms or cations in a molecule (Ta₃) tritave An interval with a frequency ratio of 3:1, usually in the context of the Bohlen–Pierce scale where it replaces the octave. trite used so many times that it is commonplace, or no longer interesting or effective; worn out, hackneyed. tritegmic Having or pertaining to three integuments. triteleia Any plant of the genus Triteleia. tritelluride Any telluride having three tellurium atoms in each molecule or unit cell. tritely In a trite manner. tritemporal Keeping track of three timelines triteness The state or quality of being trite. triterminal Involving three terminals or electrodes. triternate Three times ternate; applied to a leaf dividedvintovthree stalks, each with three leaflets that divide into three lobes triternately In a triternate manner. triterpene Any terpene formed from six isoprene units, and having thirty carbon atoms; they are relatively rare. triterpenic Related to or derived from a triterpene triterpenoic Relating to a triterpenoid carboxylic acid or similar derivative triterpenoid a terpenoid having a C₃₀ skeleton triterpenoidal Relating to triterpenoids triterritorial Involving three territories. trithallium Three thallium atoms or cations in a molecule (Tl₃) tritheism A belief in three gods, especially the nontrinitarian doctrine that God the Son, God the Father, and the Holy Spirit are separate gods which is condemned as heresy by most Christian denominations. tritheist A believer in three gods. tritheistic Having, or pertaining to, a belief in three gods. tritheistical Of or relating to tritheism. tritheistically In a tritheistic manner. tritheite A tritheist. tritheledontid Any therapsid in the family Tritheledontidae. trithiane Any of three isomeric six-membered saturated heterocycles having three carbon atoms and three sulfur atoms; any derivative of these compounds trithing a riding (one of three ancient divisions of a county in England) trithioacetone A chemical compound containing six methyl groups attached to a 1,3,5-trithiane ring used as a flavouring agent; also known as 2,2,4,4,6,6-hexamethyl-1,3,5-trithiane. trithiocarbonate The anion CS₃²⁻ or any salt containing this anion trithiocyanate Any compound containing three thiocyanate groups trithionate The conjugate base of trithionic acid. trithionic Containing three sulfur atoms. trithiophosphate Any thiophosphate in which three oxygen atoms have been replaced by sulfur trithorax A protein (or one of a larger group) whose function is to modify gene expression trithorium Three thorium atoms or cations in a molecule (Th₃) tritiate To add tritium (an isotope of hydrogen) to something. tritiated Describing a compound which has had some of its normal hydrogen (protium) replaced with the heavy isotope tritium. tritiation The process, or the result of tritiating (adding tritium to something). tritical trite triticale A grain crop, a hybrid of wheat and rye, that gives a high yield. triticality triteness tritically tritely triticeal Shaped like a grain of wheat, especially denoting to the pair of small cartilages in the larynx. triticeous Resembling a grain of wheat. triticin A carbohydrate isomeric with dextrin. triticonazole A particular fungicide. triticum A plant of the genus Triticum (wheat and related cereals). tritide A hydride using tritium. tritigenic That produces tritium (by radioactive decay etc) tritimovirus Any virus of the genus Tritimovirus tritish Somewhat trite. trititanium Three atoms of titanium in a chemical compound. tritium A radioactive isotope of the element hydrogen (symbol T, ³H or 31H) having one proton and two neutrons. Tritiya The third day (tithi) in the lunar fortnight (paksha) of the Hindu calendar. tritkarren Synonym of rillenkarren. Tritlington A hamlet in Tritlington and West Chevington parish, Northumberland, England (OS grid ref NZ2092). tritocerebral Of or pertaining to the tritocerebrum. tritocerebrum The third set of fused ganglia comprising the insect brain. Tritogeneia An epithet of the goddess Athena, of uncertain meaning, but possibly "Triton-born", "triple-born", or "third-born". tritoma A flowering plant of the genus Kniphofia. tritomerite A moveable arm that functions, with the fixed deutomerite, to grip and manipulate food in horseshoe crabs. triton the nucleus of a tritium atom, consisting of a proton and two neutrons. tritonal Having or involving three tones. tritonality The quality of being tritonal. tritone An interval of three whole tones. tritoned Having a tritone. Tritoness A female spirit of the sea. tritonia Any of the genus Tritonia of flowering plants in the iris family. Tritonian Of or pertaining to the classical Greek god Triton. tritonic Of or relating to a tritone. tritoniid Any sea slug in the family Tritoniidae. tritonous Having or involving three tones; tritonal. tritonymph The instar between deutonymph and adult in some organisms. tritonymphal Relating to a tritonymph. tritoon A type of boat with three parallel pontoons. tritoqualine A particular antihistamine drug. tritordeum An amphiploid cereal derived from the cross between a South American wild barley (Hordeum chilense) and durum wheat. tritorium A vessel for separating liquids of different densities. tritosternum The sternite of the segment bearing the first pair of walking legs. tritovum An embryonic insect which has twice cast its skin before hatching from the egg, such as some mites of Myobia tritoxide trioxide; the third of a series of oxides of a particular metal tritozooid A zooid of the third generation in asexual reproduction. tritransgenic triply transgenic tritransitive Of or relating to a class of verbs or constructions which take three objects. tritriacontadiene Any of very many isomeric unsaturated hydrocarbons that have thirty-three carbon atoms and two double bonds tritriacontane Any of very many isomers of the aliphatic hydrocarbon having thirty-three carbon atoms, but especially n-tritriacontane CH₃(CH₂)₃₁CH₃ tritriacontanoic Of or pertaining to tritriacontanoic acid or its derivatives; psyllic. tritriacontene Any of very many isomers of the unsaturated aliphatic hydrocarbon having thirty-three carbon atoms and one double bond tritricosanoate Any salt or ester containing three tricosanoate groups tritricosanoin The triglyceride of tritricosanoic acid; glyceryl tritricosanoate tritridecanoin The triglyceride of tridecanoic acid tritrophic Describing a parasite that feeds on another parasite that feeds on a third parasite.