[ moh-muh n-ter-ee ]
/ ˈmoʊ mənˌtɛr i /


lasting but a moment; very brief; fleeting: a momentary glimpse.
that might occur at any moment; ever impending: to live in fear of momentary annihilation.
effective or recurring at every moment; constant.

Origin of momentary

1425–75; late Middle English momentare < Latin mōmentārius. See moment, -ary

Related forms

mo·men·tar·i·ness, nounin·ter·mo·men·tar·y, adjectivenon·mo·men·tar·i·ness, nounnon·mo·men·tar·y, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for momentary

British Dictionary definitions for momentary


/ (ˈməʊməntərɪ, -trɪ) /


lasting for only a moment; temporary

Derived Forms

momentariness, noun
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