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leptotene

[lep-tuh-teen] /ˈlɛp təˌtin/
noun, Cell Biology.
1.
a stage of cell division during the prophase of meiosis, in which the chromosomes are not distinct but appear as a mass of entangled threads.
Origin of leptotene
< French leptotène (1900); see lepto-, -tene
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Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for leptotene

leptotene

/ˈlɛptəʊˌtiːn/
noun
1.
the first stage of the prophase of meiosis during which the nuclear material becomes resolved into slender single-stranded chromosomes
Word Origin
C20: from lepto- + -tene, from Greek tainia band, filament
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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leptotene in Medicine

leptotene lep·to·tene (lěp'tə-tēn')
n.
The early stage of prophase in meiosis in which the replicated chromosomes contract and become visible as long filaments well separated from one another.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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