Definition of "yellowing" []

• Present participle of yellow. (verb)
• The act of becoming yellow and/or of losing brightness (noun)

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• "The brown tinge of the paper, which we call yellowing because our eyes cannot believe in color, indicate that the paper is acidic, degrading."
• "Embrace the viral social phenomenon that occurs every time the sound of glass breaking pierces the steady drone of wine banter and take part in yellowing “ohhhh” along with your neighbor."
• "Our young-old faces, chiseled and gaunt from the fever and the heat and the sleepless nights, now stare back at us, lost and damned strangers, frozen in yellowing snapshots packed away in cardboard boxes with our medals and our ribbons."