[ fruhn-tuh-jen-uh-sis ]
/ ˌfrʌn təˈdʒɛn ə sɪs /

noun Meteorology.

the formation or increase of a front or frontal zone.
Compare frontolysis.

Origin of frontogenesis

First recorded in 1930–35; fronto- + -genesis Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for frontogenesis


/ (ˌfrʌntəʊˈdʒɛnɪsɪs) /


meteorol the formation or development of a front through the meeting of air or water masses from different origins

Derived Forms

frontogenetic (ˌfrʌntəʊdʒəˈnɛtɪk), adjectivefrontogenetically, adverb
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

Science definitions for frontogenesis


[ frŭn′tō-jĕnĭ-sĭs ]

The formation or intensification of a meteorological front caused by an increase in the horizontal thermal gradient (the difference in temperature of adjacent air masses) over time. Compare frontolysis.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.