pachytene

from WordNet (r) 3.0 (2006)

pachytene
    n 1: the third stage of the prophase of meiosis

from The Collaborative International Dictionary of English v.0.48

pachytene \pachytene\ n. (Biol.)
   The third stage of the prophase of meiosis, the stage in
   which the pairing of homologous chromosomes has been
   completed.
   [WordNet 1.5]