the process whereby heavy molecules of naphtha or petroleum are broken down into hydrocarbons of lower molecular weight (especially in the oil-refining process)
"The refinery increased its cracking output to convert heavy naphtha into lighter, more valuable fuels."
The thermal decomposition of a substance, especially that of crude petroleum in order to produce petrol / gasoline.
"The oil refinery's cracking process breaks down heavy crude petroleum into lighter fractions like gasoline and diesel."
In plain English: Cracking is when something breaks apart with a loud snapping sound, often because it was hit too hard or got very cold.
Usage: Avoid using "cracking" as a noun when referring to the thermal decomposition process unless discussing industrial chemistry, as it is more commonly used informally to mean a loud noise or an excellent performance. In casual speech, prefer this term over synonyms like "breakdown" only when emphasizing the auditory aspect of something splitting or describing high-quality work with approval.
present participle of crack
"The old branch was cracking under the weight of the heavy snow."
In plain English: To crack something means to break it open by applying force until it splits apart.
"He is cracking under the pressure of his new job."
That cracks; that produces a sharp sound as of something splitting or breaking.
"The old branch made a loud cracking sound just before it snapped in half during the storm."
In plain English: Cracking describes something that is broken, damaged, or not working properly because it has split apart under pressure.
"The cracking sound from his old pipe was annoying everyone in the room."
Very, usually associated with praise.
"The coach's cracking about our team's performance made everyone feel incredibly proud of their hard work."
In plain English: To crack means to laugh uncontrollably hard at something funny.
"The old ladder was cracking when he leaned on it too hard."
The word cracking comes from the Middle English term crakynge. It entered modern usage with a meaning that has remained consistent over time.