leptotene

lep to tene |ˈleptəˌtēn ˈlɛptətin | ▶noun Biology the first stage of the prophase of meiosis, during which each chromosome becomes visible as two fine threads (chromatids ). ORIGIN early 20th cent.: from lepto- ‘narrow, fine ’ + Greek tainia ‘band, ribbon. ’

leptotene

leptotene |ˈlɛptə (ʊ )tiːn | ▶noun [ mass noun ] Biology the first stage of the prophase of meiosis, during which each chromosome becomes visible as two fine threads (chromatids ). ORIGIN early 20th cent.: from lepto- ‘narrow, fine ’ + Greek tainia ‘band, ribbon ’.