Definition of "magnific"

Dread Soverayne Goddesse, that doest highest sit / In seate of judgement in th'Almighties stead, / And with magnificke might and wondrous wit / Does to thy people righteous doome aread […].

1596, Edmund Spenser, “Book V, Canto I”, in The Faerie Queene. […], London: […] [John Wolfe] for William Ponsonbie

Then too the pillar'd Dome, magnific, heav'd / Its ample Roof […] .

1730, James Thomson, “Autumn”, in The Seasons, London: […] A[ndrew] Millar, and sold by Thomas Cadell, […], published 1768