Short for Retroactive Continuity, meaning later added events in a story that contradict an already exisiting chronology and plot, creating paradoxes or illogicisms.
But mainly a stupid, bloated, meaningless neologism created by
basement dweller fucktard comic geeks who like to think kiddy stories about flying men in tights with superpowers is a very, very serious topic that needs near scientific jargon to be clearly
understood.
And jargon is, as we all now, what idiots use to try and sound intelligent , when they are just refering to very simple ideas (perfect eg : using "concept" to say "idea" : same words, "concept" just sounds smarter).
Used mostly because it sounds like "defcon", and nothing makes an american's
dick harder then cool sounding words.
Hence a million retarded military acronyms that sound like they where made up by a twelve year old : this trend is getting so ridiculously rampant that it even has a name : the dreaded BACKRONYM.
It goes like this : come up with a cool souding 5 or 6 letter word (eg WRAITH, VIPER, SPECTER, KAOS...), find words for each letter and try to make sense, eg : FANG (Fast, Adaptable, Next-Generation Ground Vehicle).
As for stupid but cool-sounding neologisms, Americans
absolutely love this and think it makes them sound edgy, cool and
intimidating, the rest of the world just thinks it sounds immature, childish and retarded.