interphase /in″tərfās′/ [L, inter + Gk, phasis, phase] , the stage in the cell cycle during which the cell is not dividing, the chromosomes are not individually distinguishable, and such biochemical and physiological activities as DNA synthesis occur. Interphase follows telophase of one cell division and extends to the beginning of prophase of the next division. See also anaphase, interkinesis, metaphase, mitosis, prophase, telophase, karyostasis.