Coalesce, coalescence or coalescent can refer to:
Chemistry and physics Coalescence (chemistry), the process by which two or more separate masses of miscible substances seem to "pull" each other together should they make the slightest contact Coalescence (physics), the merging of two or more droplets, bubbles or particles into one Coalescer, device which induces coalescence in a medium
Computer science Coalescence (computer science), the act of merging adjacent free blocks of memory to fill gaps caused by memory deallocation COALESCE, an SQL function that selects the first non-null from a range of values Null coalescing operator, a binary operator that is part of the syntax for a basic conditional expression in several programming languages Coalesced hashing, a strategy of hash collision resolution in computing Interrupt coalescing, a technique where events which would normally trigger a hardware interrupt are held back until either a certain amount of work is pending or a timeout timer triggers Timer coalescing, an energy-saving technique for processors
Other fields of science Coalescence (genetics) or the coalescent theory, the merging of genetic lineages backwards to a most recent common ancestor, in other words a model of how alleles sampled from a population may have originated from a common ancestor Coalescence (linguistics), also known as fusion (phonetics) or vowel coalescence, a sound change where two or more phonological segments with distinctive features merge into a single segment In geography, the process by which urban sprawl produces a linear conurbation Microvoid coalescence (materials science), a high energy microscopic fracture mechanism observed in the majority of metallic alloys and in some engineering plastics
Popular culture Coalesce (band), a metalcore band from Kansas City, Missouri, active from 1994 to 1999, 2005– Coalesce discography, a list of Coalesce's albums and songs Coalesce / Boysetsfire, a split music album released in 2000, by the bands Boysetsfire and Coalesce covering each other Coalescence (Whit Dickey album), a 2004 jazz album Coalescence (Andre Canniere album), a 2013 jazz album Coalescent, a 2003 science-fiction novel Coalescence (song), a song by Chris Christodoulou for the 2013 game Risk of Rain
See also Coalition, when people temporarily work together to achieve a common goal Coalesse, a U.S. based furniture company Mind coalescence, a term related to collective intelligence