English Words Starting With T

• triglyceride

  nounLow in general usage, high in medical and scientific contexts.
  /traɪˈɡlɪs.ə.raɪd/A type of lipid consisting of one glycerol molecule and three fatty acids, found in fats and oils.
• triglyph

  nounVery Low (C2+ Vocabulary)
  /ˈtrʌɪɡlɪf/A rectangular architectural block with three vertical grooves (glyphs), found alternating with metopes in the frieze of the Doric order.
• trigo

  nounB2
  Not applicable. For Spanish: /ˈtɾi.ɣo/A cereal plant of the genus Triticum, cultivated for its grain, which is ground to make flour for bread, pasta, etc.
• trigon

  nounRare / Very Low Frequency
  /ˈtraɪ.ɡɒn/A triangle, especially in a technical or historical context.
• trigonal trisoctahedron

  nounVery Low
  /ˌtraɪ.ɡən.əl ˌtrɪs.ɒk.təˈhiː.drən/A specific polyhedron in crystallography and geometry with 24 faces, each an isosceles triangle, and possessing threefold rotational symmetry.
• trigone

  nounVery Low / Specialized
  /ˈtrʌɪɡəʊn/A triangular anatomical structure, typically referring to a triangular area at the base of the urinary bladder.
• trigonometric equation

  nounC1
  /ˌtrɪɡ.ən.əˌmet.rɪk ɪˈkweɪ.ʒən/A mathematical equation that involves trigonometric functions (sine, cosine, tangent, etc.) of an unknown variable, typically an angle.
• trigonometric function

  nounLow (Technical)
  /ˌtrɪɡənəˈmɛtrɪk ˈfʌŋkʃən/Any of six fundamental mathematical functions—sine, cosine, tangent, cosecant, secant, cotangent—that relate the angles of a right‑angled triangle to ratios of its sides.
• trigonometric series

  nounC2 (Very low frequency, specialist)
  /ˌtrɪɡənəˌmɛtrɪk ˈsɪəriːz/An infinite series in which the terms are trigonometric functions of multiples of a variable.
• trigonometry

  nounlow
  /ˌtrɪɡ.əˈnɒm.ɪ.tri/A branch of mathematics that deals with the relationships between the sides and angles of triangles.
• trigonum

  nounVery Low
  /traɪˈɡəʊ.nəm/A small triangular area, anatomical space, or bone.
• trigram

  nounC2 (Very Low Frequency / Specialised)
  /ˈtraɪ.ɡræm/A group of three letters, characters, or consecutive items in a sequence.
• trigraph

  nounLow
  /ˈtraɪ.ɡrɑːf/A sequence of three letters representing a single sound, such as 'tch' in 'match'.
• trihalomethane

  nounC2/Technical
  /traɪˌheɪləʊˈmiːθeɪn/A chemical compound consisting of a methane molecule where three of the four hydrogen atoms have been replaced by halogen atoms (chlorine, bromine, iodine, or fluorine).
• trihedral

  adjectivenounVery Low
  /traɪˈhiːdrəl/Having three plane faces meeting at a point; forming or being a trihedron (a solid figure with three faces meeting at a point).
• trihedron

  nounVery Low
  /traɪˈhiː.drən/A geometric figure formed by three planes intersecting at a single point.
• trihydrate

  nounC2
  /traɪˈhaɪdreɪt/A chemical compound containing three molecules of water per molecule of the primary substance.
• triiodomethane

  nounVery Low
  /ˌtraɪaɪˌəʊdəʊˈmiːθeɪn/An organic chemical compound with the formula CHI₃, commonly known as iodoform.
• triiodothyronine

  nounC2 (Very low frequency, specialized/technical)
  /ˌtraɪ.aɪ.ə.dəʊˈθaɪ.rə.niːn/A specific, active thyroid hormone (T3), essential for regulating metabolism, growth, and development.
• trijet

  nounLow
  /ˈtraɪ.dʒet/A jet aircraft with three engines.

Showing 5701–5720 of 7190 words.