a suffix of Greek origin used to form nouns of action or process: ecesis.
Origin of -esis
< Greek -ē- v. formative + -sis -sis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Medical definitions for -esis
Condition, action, or process:centesis.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.