- 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- the first stage of the prophase of meiosis during which the nuclear material becomes resolved into slender single-stranded chromosomes
C20: from lepto- + -tene, from Greek tainia band, filament
- 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.