Skip to Content
Medical Term:


Pronunciation: kro'ma-tid


Each of the two strands formed by longitudinal duplication of a chromosome that becomes visible during prophase of mitosis or meiosis; the two chromatids are joined by the still undivided centromere; after the centromere has divided at metaphase and the two chromatids have separated, each chromatid becomes a chromosome.

[G. chroma, color, + -id (2),]

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.