diakinesis

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The final stage of the prophase in meiosis, characterized by shortening and thickening of the paired chromosomes, formation of the spindle fibers, disappearance of the nucleolus, and degeneration of the nuclear membrane.

from The Century Dictionary.

• noun In cytology, the segmented spireme stage in the primary oöeyte or spermatocyte.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun cytology the last stage of prophase, in which the nucleolus and nuclear envelope disappear, spindle fibers form, and the chromosomes shorten in preparation for anaphase.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the final stage of the prophase of meiosis