eu·chro·ma·tin (yōō-krō'mə-tĭn') n. Chromosomal material that is genetically active and stains lightly with basic dyes. eu'chro·mat'ic (yōō'krō-māt'ĭk) adj.
Main Entry: eu·chro·ma·tin Pronunciation: (')yü-'krO-m&t-&n Function: noun : the genetically active portion of chromatinthat is largely composed of genes —eu·chro·mat·ic/"yü-krO-'mat-ik/adjective
euchromatin eu·chro·ma·tin (y&oomacr;-krō'mə-tĭn) n. Chromasomal material that consists of uncoiled dispersed threads during interphase, is genetically active, and stains lightly with basic dyes.