Pronunciation: [klˈə͡ʊʒəz] (IPA) 
The word "closures" is spelled with a "c" followed by "l-o-s-u-r-e-s." The phonetic transcription of this is /ˈklouʒərz/. The "cl" sound at the beginning is a combination of the "k" and "l" sounds, while the "o" is pronounced with a long "o" sound like "oh." The "u" is pronounced as a schwa sound, like the "uh" in "cup." The "-sures" suffix is pronounced with a sharp "zh" sound in the middle and a soft "s" at the end.
Closures, in the context of computer programming and software development, refer to a powerful concept that involves bundling together a function along with its surrounding state or environment. It refers to preserving the state of a function even after it has finished executing or the scope in which it was defined has been exited.
A closure allows a function to access and manipulate variables from its outer or lexical environment, even when that function is invoked or called from a different scope. This encapsulation allows for the persistence of data and the preservation of functional context.
Closures are typically used when dealing with higher-order functions, callback functions, or when passing functions as arguments to other functions. They provide a way to maintain the accessibility and integrity of variables across different function calls.
By capturing and storing the state of variables, closures enable the creation of private or partially private variables. They allow for the creation of self-contained functions that possess access to their own variables plus the variables of their parent scopes.
Closures play a crucial role in enabling functional programming paradigms and are extensively utilized in languages such as JavaScript. They facilitate the creation of more modular, maintainable, and flexible code by preserving data and context throughout the lifespan of a program.
* The statistics data for these misspellings percentages are collected from over 15,411,110 spell check sessions on www.spellchecker.net from Jan 2010 - Jun 2012.
The word "closures" originated from the verb "close", which comes from the Old English word "clōsian" or "clūsian". The etymology of "close" traces back to the Proto-Germanic word "klusijaną", meaning "to shut" or "to close". This ultimately has its roots in the Proto-Indo-European word "klus", which means "to shut" or "to close" as well.
