holy trinity

Short definition from Wiktionary

Noun

1. 1
   A triad of people or things considered essential.
2. 2
   A triad of people or things considered essential: Any of several triads of core ingredients of certain cuisines, as for example celery, onions, and carrots in soffritto or mirepoix, or onions, peppers, and tomato in sofrito.

Proper noun

1. 1
   Alternative letter-case form of Holy Trinity (“three main ingredients of Cajun cuisine”).
2. 2
   The three persons of the Godhead: the Father, Son, and Holy Spirit.
3. 3
   Three prestigious colleges in the US: Harvard, Yale, and Princeton.
4. 4
   Celery, bell peppers, and onions, three important ingredients in Cajun cuisine.
5. 5
   The combination of an opioid, a benzodiazepine, and carisoprodol.
6. 6
   Alternative letter-case form of Holy Trinity.