matin

UK: /ˈmætɪn/ US: (mat′n)

WordReference Random House Unabridged Dictionary of American English © 2025

mat•in  (mat′n), n. 

1. Religion (often cap.) matins. Also,[esp. Brit.,] mattins. (usually used with a sing. v.)[Eccles.]
   • the first of the seven canonical hours.
   • the service for it, properly beginning at midnight, but sometimes beginning at daybreak.
   • Also called Morning Prayer. the service of public prayer, said in the morning, in the Anglican Church.
2. [Archaic.] aubade.

adj. 

3. Also, mat′in•al. pertaining to the morning or to matins.

• Latin mātūtīnus matutinal
• Old French matin
• Middle English matyn (plural matines) 1200–50

Collins Concise English Dictionary © HarperCollins Publishers::

matin, mattin / ˈmætɪn/matinal adjective

1. of or relating to matins

Etymology: 14th Century: see matins