ユークロマチンMeanings1nouneuchromatinA term from molecular biology referring to the lightly packed form of chromatin that is often transcriptionally active.ユークロマチンは、細さい胞ぼう核かく内ないで遺い伝でん子しの転てん写しゃが活かっ発ぱつに行おこなわれる領りょう域いきです。Euchromatin is a region in the cell nucleus where gene transcription is actively carried out.