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Definition 2025
copyleft
copyleft
English
Noun
copyleft (usually uncountable, plural copylefts)
-  The philosophy of using copyrights to enforce freedom of information, especially software source code.
- They believe in copyleft because they want their software to be used freely by anyone.
 
 -  A software license that follows this philosophy.
- I have placed my program under copyleft.
 - The GNU General Public License is a copyleft licence.
 
 
Derived terms
Translations
philosophy
Verb
copyleft (third-person singular simple present copylefts, present participle copylefting, simple past and past participle copylefted)
-  To license under a copyleft license.
- Linus Torvalds copylefted the Linux kernel.