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English Words Starting With T

7,190 entries — pick a word to see its definition, pronunciation, and usage.

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Noun Verb Adjective Adverb Plural noun Combining form Verb (transitive)Verb (intransitive)Verb (ambitransitive)

triallist
nounC2
/ˈtraɪəlɪst/A person who participates in a trial, especially an athlete on trial for a sports team or a participant in a clinical trial.
trialogue
nounLow
/ˈtraɪ.ə.lɒɡ/A conversation or discussion between three parties or groups.
trialware
nounC1
/ˈtraɪəlweə(r)/Software that can be used for free for a limited time before requiring payment.
triamcinolone
nounLow frequency. Medical and pharmaceutical term.
/traɪˌæmˈsɪnələʊn/A synthetic corticosteroid medication.
trianda
nounLow
A town on the island of Rhodes, Greece.
triangle
nounHigh
/ˈtraɪæŋɡl/A polygon with three sides and three angles.
triangle inequality
nounC2
/ˈtraɪæŋɡl̩ ˌɪnɪˈkwɒlɪti/A fundamental theorem in mathematics stating that for any triangle, the sum of the lengths of any two sides must be greater than the length of the remaining side.
triangle of forces
nounC1
/ˈtraɪæŋɡl̩ əv ˈfɔːsɪz/A closed triangle drawn to represent three forces in equilibrium, where the lengths of the sides are proportional to the magnitudes of the forces.
triangular matrix
nounLow
/traɪˌæŋɡjʊlə ˈmeɪtrɪks/A square matrix in which all the entries either above or below the main diagonal are zero.
triangular trade
nounLow in everyday conversation; high in academic and historical contexts.
/traɪˈæŋɡjʊlə treɪd/A historical trading system involving three ports or regions where goods are exchanged in a triangular pattern, most famously associated with the Atlantic slave trade.
triangulate
adjectiveverbverb-transitiveLow frequency
/traɪˈæŋɡjʊleɪt/to measure or determine the position of something by using the geometry of triangles, or to divide an area into triangles.
triangulation
nounLow
/traɪˌæŋɡjʊˈleɪʃən/The process of determining the location of a point by measuring angles to it from two known points at either end of a fixed baseline, commonly used in surveying, navigation, and geometry.
triangulation station
nounLow
/traɪˌæŋɡjʊˈleɪʃən ˈsteɪʃən/A fixed point used in surveying for measuring angles in triangulation.
triangulum
nounLow
/traɪˈæŋɡjʊləm/A triangle or three-sided figure.
triangulum australe
nounRare
/traɪˈæŋɡjʊləm ɒˈstreɪliː/A small constellation in the southern sky, shaped like a triangle.
triannual
adjectivenounLow
/traɪˈæn.ju.əl/Occurring three times a year.
triarchy
nounRare / Very Low
/ˈtraɪ.ɑː.ki/A form of government or system ruled by three people or powers jointly.
triarylmethane dye
nounVery Low (Specialist/Technical)
/traɪˌærɪlˈmiːθeɪn daɪ/A class of synthetic dyes characterized by a central carbon atom bonded to three aryl groups, forming the chromophore.
triassic
adjectivenounLow
/traɪˈæsɪk/Relating to the first geological period of the Mesozoic era, from about 252 to 201 million years ago.
triathlete
nounLow-frequency (specialist term)
/traɪˈæθ.liːt/An athlete who competes in a triathlon.

Showing 5521–5540 of 7190 words.