-sis

a suffix appearing in loanwords from Greek, where it was used to form from verbs abstract nouns of action, process, state, condition, etc.: thesis; aphesis.

Nearby words

-shaped,
-sharing,
-ship,
-sided,
-sion,
-sk,
-sol,
-soma,
-some,
-something

Origin of -sis

From Greek

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Word Origin and History for -sis

-sis

suffix in Greek-derived nouns denoting action, process, state, condition, from Greek -sis, which is identical in meaning with Latin -entia, English -ing (1).