The Collaborative International Dictionary of English v.0.48:
anaphase \anaphase\ n. 1. the stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle. [WordNet 1.5]WordNet (r) 3.0 (2006):
anaphase n 1: the stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle