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. Also,pach•y•ne•maPronunciation: (pak"u-nē'mu). [key]
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.