micelian

micelian, wk.v: to become great, to increase in size or in quantity; to make great. (MI-cheh-li-ahn / ˈmɪ-tʃɛ-lɪ-an)

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Medieval manuscript with large lettering made up of detailed patterns, knotted line work and small creatures.
Lindisfarne Gospels; England (probably Lindisfarne), c. 700; British Library, Cotton MS Nero D IV, f. 211r. [bl.uk]

deorcian

deorcian, wk.v: to darken, to grow dark. (DEH-ork-ih-ahn / ˈdɛɔr-kɪ-an)

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Two facing pages of a medieval manuscript made of black-dyed parchment, with an illustration of saints on the left and Latin writing in gold and white on the right; the margins are decorated with a floral design in gold leaf on a field of blue.
The Black Hours; Belgium (Bruges), c. 1480; Morgan Library & Museum, MS M.493, ff. 18v-19r. [themorgan.org]