russeting

Etymology

russet + -ing

noun

1. Russet (a coarse reddish fabric).
2. Russet (a kind of apple).
   Mr. Collinson then produced several samples of the apples; an untainted russeting, a russeting changed in complexion which grew among a great cluster of unaltered brethren, and some apples of the other tree which had caused the change in the russetings, and whose fruit had in turn received a rough cast from the russetings. 16 January 1820, John Turner, “From the London Horticultural Transactions, Vol. V. page, 63.—Observations on the Accidental Intermixture of Character, in Certain Fruits. By John Turner, F.L.S. Assistant Secretary. January 16, 1820.”, in Massachusetts Agricultural Journal, volume IX, number 2, [Boston, Mass.: Massachusetts Society for Promoting Agriculture], published July 1826, →OCLC, page 135
3. Early season damage to citrus fruit caused by rust mites.

verb

1. present participle and gerund of russet