- a person who believes in the doctrine of the Trinity
- of or relating to the doctrine of the Trinity or those who uphold it
WordReference Random House Unabridged Dictionary of American English © 2026
Trin•i•tar•i•an
(trin′i târ′ē ən),USA pronunciation adj.
n.
- Religionbelieving in or adhering to the doctrine of the Trinity.
- Religionpertaining to Trinitarians, or believers in the doctrine of the Trinity.
- Religionbelonging or pertaining to the religious order of Trinitarians.
- Religionof or pertaining to the Trinity.
- Religion(l.c.) forming a trinity;
threefold;
triple.
n.
- Religiona person who believes in the doctrine of the Trinity.
- Religiona member of the "Order of the Holy Trinity,'' a religious order founded in 1198 to redeem Christian captives of the Muslims.
- Neo-Latin trīnitāri(us) of the Trinity (see Trinity, -ary) + -an
- 1555–65
Collins Concise English Dictionary © HarperCollins Publishers::
Trinitarian /ˌtrɪnɪˈtɛərɪən/ n
'Trinitarian' also found in these entries (note: many are not synonyms or translations):