oration

A formal, often ceremonial speech.

a funeral oration; an impassioned oration; to make / deliver / pronounce an oration

[…] there is ſuch confuſion in my powers, / As after ſome Oration fairely ſpoke / By a beloued Prince, there doth appeare / Among the buzzing pleaſed multitude.

A lengthy speech or argument in a private setting.

My Landlord was likewiſe beginning his Oration to Jones, but was preſently interrupted by that generous Youth, who ſhook him heartily by the Hand; and aſſured him of entire Forgiveneſs […]

Sally bustled off to set on the kettle for tea, and felt half ashamed, in the quiet of the kitchen, to think of the oration she had made in the parlour.

A specific form of short, solemn prayer said by the president of the liturgical celebration on behalf of the people.

To deliver an oration; to speak.

1633, John Donne (attributed translator), The Auncient History of the Septuagint. Written in Greeke, by Aristeus 1900. yeares since, London, p. 80, cited in Henry Todd, A Dictionary of the English Language, London: Longman, Hurst, Rees, Orme, and Brown, 1818, Volume 3, They gave answers with great sufficiency touching all difficulties concerning their own law, and had marvellous promptitude both for orationing and giving judgement.

1764, Samuel Foote, The Mayor of Garratt, Act II, in The Dramatic Works of Samuel Foote, Dublin: S. Price et al., 1778, Volume 1, p. 286, […] Master Primmer is the man for my money; a man of learning; that can lay down the law: why, adzooks, he is wise enough to puzzle the parson: and then, how you have heard him oration at the Adam and Eve of a Saturday night, about Russia and Prussia […]