Noun

(en noun)

A large fire extending to many objects, or over a large space; a general burning.

It took sixty firefighters to put out the conflagration .

(figuratively) A large-scale conflict.

* 1919 , :

This was well brought out in the skillfully conducted campaigns by the various governments in appealing to the masses with their characteristic suggestible subconsciousness, stirring to the very depths the reflex consciousness of gregarious man by all sorts of direct and indirect suggestions of fear of attacks and patriotic reactions of self-defence against such attacks until the evil genie of self-preservation and fear became loose, resulting in a sweeping conflagration of a war of nations with all the horror of diseases, mutilation, and extermination of millions of human lives, over seventeen and a half millions, according to latest accounts, having perished in this world-massacre of the human race.

Noun

(en noun)

A violent release of energy (sometimes mechanical, nuclear, or chemical.)

* {{quote-magazine, date=2013-06-21, author= Chico Harlan

, volume=189, issue=2, page=30, magazine=(The Guardian Weekly) , title= Japan pockets the subsidy … , passage=Across Japan, technology companies and private investors are racing to install devices that until recently they had little interest in: solar panels. Massive solar parks are popping up as part of a rapid build-up that one developer likened to an "explosion ."}}

A bursting due to pressure.

The sound of an explosion.

A sudden uncontrolled increase.

*

As with the Lejeuneaceae, this pattern of massive speciation appears to be correlated with the Cretaceous explosion of the angiosperms and the simultaneous creation of a host of new microenvironments, differing in humidity, light intensity, texture, etc.

A sudden outburst.

* {{quote-magazine, date=2013-08-10, volume=408, issue=8848, magazine=(The Economist)

, title= Can China clean up fast enough? , passage=All this has led to an explosion of protest across China, including among a middle class that has discovered nimbyism. That worries the government, which fears that environmental activism could become the foundation for more general political opposition. It is therefore dealing with pollution in two ways—suppression and mitigation.}}