unreddening

Verb

unredden (third-person singular simple present unreddens, present participle unreddening, simple past and past participle unreddened)

1. (transitive) To cause to stop being red.
   • Ils avoient eu la bonté de me faire dire plusieurs fois qu’ils vouloient me voir dès le lendemain de ma quarantaine finie. Et moi, qui savois la crainte que le roi avoit de la petite vérole, je résistai jusqu’à un commandement absolu, auquel il fallut obéir, quoique fort rouge, à quoi le grand...1899, [Louis de Rouvroy,] duc de Saint-Simon, translated by Katharine Prescott Wormeley, chapter XI, in Memoirs of the Duc de Saint-Simon on the Times of Louis XIV. and the Regency. […], Versailles...

   Synonyms:

   deredden

2. (transitive) To correct for redshift.
   • Let me first ask one question: Who cares what the interstellar dust is made of? The typical optical astronomer couldn’t care less, for if you simply tell him the reddening law, particularly the ratio of total to selective extinction, he can unredden his clusters, correct the distance moduli, find...1971, John E[ldon] Gaustad, “The Composition of Interstellar Dust”, in Beverly T[urner] Lynds, editor, Dark Nebulae, Globules, and Protostars, Tucson, Ariz.: University of Arizona Press, →ISBN, page...

   Synonyms:

   deredden

3. (intransitive) To cease being red; to lose redness.
   • Wer nahm das Rosa an? Wer wußte auch, daß es sich sammelte in diesen Dolden? Wie Dinge unter Gold, die sich entgolden, entröten sie sich sanft, wie im Gebrauch.a. 1964, Rainer Maria Rilke, translated by J[ames] B[lair] Leishman, “Pink Hydrangea”, in New Poems […], London: Hogarth Press, published 1964, →OCLC, 2nd part, page 283