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a combining form meaning “seven,” used in the formation of compound words: heptahedron.
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What does "amaranth" mean?
Also especially before a vowel, hept-.
Origin of hepta-
<Greek, combining form of heptá seven; cognate with Latin septem; akin to Old English seofonseven
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
How to use hepta- in a sentence
Heptagynia, hept-a-jin′i-a, n. an order of plants having seven styles.
Heptandria, hept-an′dri-a, n. a class of plants having seven stamens.
British Dictionary definitions for hepta-
before a vowel hept-
Word Origin for hepta-
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
Medical definitions for hepta-
Containing seven atoms, molecules, or groups:heptane.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.