flavescence/fləˈvɛsəns/EtymologyFrom Latin flavescens, present active participle of flāvēscō (“to become yellow”). By surface analysis, Latin flāv(us) + -escence.flavescence means A phytoplasma disease of grapevines. Lexicurio rates it Sui generis — a strength score of 87 out of 100.nounA phytoplasma disease of grapevines.The act of becoming yellow; yellowing.Yellowishness.