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a combining form meaning “thin,” “fine,” “slight,” used in the formation of compound words:
Also, especially before a vowel, lept-.
Origin of lepto-
< Greek lepto-, combining form of leptós thin, slight, fine, literally, stripped, equivalent to lép(ein) to strip + -tos adj. suffix Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for lept


combining form
fine, slender, or slight: leptosome
Word Origin
from Greek leptos thin, literally: peeled, from lepein to peel
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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lept in Medicine

lepto- or lept-
Slender; thin; fine: leptocyte.

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