Breadcrumb Home > Dictionary > Index P Cite pachytene: Meaning and Definition of Find definitions for: pach•y•tene Pronunciation: (pak'i-tēn), [key] — n. Cell Biol. the third stage of prophase in meiosis, during which each chromosome pair separates into sister chromatids with some breakage and crossing over of genes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pachytene (Thesaurus) pachysandra pacific TrendingHere are the facts and trivia that people are buzzing about. January 2021 Current Events: US News A History of the New Year Saying "Happy New Year!" Around the World Noble Titles and Ranks in a Monarchy The 5 Best Air Purifiers of 2020 How U.S. Presidential Elections Work Related Content Daily Word Quiz: troglodyte Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language