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• Trinity
  Trinity

  noun
• trinity
  trinity

  noun

  a group of three

Trinity

American  

[trin-i-tee] / ˈtrɪn ɪ ti /

noun

Trinities plural

1. Christianity.

   1. Also called Blessed Trinity.  Also called Holy Trinity.  the Trinity. the union of three persons (Father, Son, andHoly Spirit ) in one Godhead, or the threefold personality of the one Supreme Being.

   2. a representation of this in art.

      Rublev’s Trinity is one of the more famous icons.

2. Trinity Sunday.

3. trinity,

   1. a group of three; triad.

      The region is hampered by an unholy trinity of extremes—extreme climate, extreme poverty, and extreme ideology.

      The 15th century saw the triumph of physics in the trinity of Copernicus, Galileo, and Newton.

   2. triunity.

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trinity ¹ British  

/ ˈtrɪnɪtɪ /

noun

1. a group of three

2. the state of being threefold

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Trinity ² British  

/ ˈtrɪnɪtɪ /

noun

1. Also called: Holy Trinity.   Blessed Trinity.  Christian theol the union of three persons, the Father, Son, and Holy Spirit, in one Godhead

2. See Trinity Sunday

3. a religious order founded in 1198

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Trinity Cultural  

1. A doctrine of Christianity that there is one God and three divine persons in the one God: the Father, the Son (Jesus), and the Holy Spirit.

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Other Word Forms

Inflected Forms

noun

• Trinities
  plural

Etymology

Origin of Trinity

First recorded in 1175–1225; Middle English Trinite, from Old French, from Late Latin trīnitās “triad, trio, the Trinity”; equivalent to trine + -ity

Explanation

A trinity is a unit made up of three — like the famous Christian trinity of the Father, the Son, and the Holy Spirit. The prefix tri — which can also be found in triangle — is a clue that this word has to do with the number three. If three people are in charge of a project together, they could be considered a trinity, and a three-person band could be called a trinity.

Example Sentences

Gov. Bill Clements, the first Republican elected to statewide office in Texas since Reconstruction, appointed him to the Trinity River Authority, according to his obituary.

From Salon • May 23, 2026

Since Trinity College supported our move to the park, we have transformed our scale, reaching over 30,000 people in 2025 alone - from our Cambridge centre to dedicated outreach with nearly 1,400 pupils in Wisbech.

From BBC • May 19, 2026

At the Consumer Electronics Show in January, he debuted an AI-equipped, three-wheeled electric vehicle named Trinity designed to serve as a rolling office.

From The Wall Street Journal • May 18, 2026

Researchers from Trinity College Dublin have uncovered an early 9th century manuscript in Rome containing one of the oldest surviving versions of the earliest known poem written in English.

From Science Daily • May 17, 2026

At about noon the next day, an army truck bumped and bounced very slowly down the dirt road leading to the Trinity site.

From "Bomb" by Steve Sheinkin