fig'ure

The outline of an organ or a part. achromatic f., achromatin f. A spindle-shaped or cylindrical f. formed by achromatic fibrils in a dividing cell, bistellate f. See amphiaster. chromatic f., chromatin f. Any one of the various forms of figures a umed by the chromatic fibrils of a nucleus during karyokinetic division. See nuclear f. division f. See nuclear f. mitotic f. See nuclear f. nuclear f. Syn.: spindle /., division f. Any one of the phases which a nucleus a umes during indirect or karyokinetic division. The set of appearances a umed by the achromatic fibrils known as the achromatic f., and that a umed by the chromatic fibrils as the chromatic f. polar f. The points or poles in the dividing cell which are ultimately occupied by daughter nuclei. The achromatic fibrils converge at these poles, and in ova there is often a radiate appearance around them, known as the polar sun. primary nuclear f. See spirem. Purkinje's f. See under Purkinje. [Lat, figura, from finger -e, to touch, shape, fashion.]