1. the process of becoming yellow or turning yellow

1. present participle of yellow; becoming yellow in color

1. becoming yellow or having a yellow tinge

Examples

• The yellowing of the old photographs was caused by age and sunlight.
• Her teeth showed signs of yellowing from years of coffee drinking.
• The yellowing leaves indicated that autumn was approaching.
• He noticed the yellowing pages of his favorite book.
• The white shirt was yellowing around the collar.
• Smoking can cause yellowing of the fingernails.
• The yellowing newspaper clippings were carefully preserved in a scrapbook.