copyleft

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cop·y·left

 (kŏp′ē-lĕft′)
n.
A form of licensing that encourages the distribution of software at no charge for noncommercial uses.

[After copyright.]

cop′y·left′ed (-lĕf′tĭd) adj.

copyleft

(ˈkɒpɪˌlɛft)
n
(Law) law a form of licensing that imposes fewer restrictions on the use of a work than copyright

copyleft

A distribution agreement that allows everybody who receives a copy of the work in question to freely distribute or adapt it on the condition that they do not claim copyright on it for themselves.
References in periodicals archive ?
GPLs are an example of "copyleft"--a licensing scheme which, says Wikipedia, can give every person who receives a copy of a work permission to reproduce, adapt or distribute it: as long as any resulting copies or adaptations are also bound by the same copyleft licensing program.
Licensing includes a need to develop stronger licensing traditions around dual licensing and other forms of asymmetric copyleft licensing.
Should a copyright holder of a specific computer program choose to however, she may through a copyleft licensing scheme, give every person who receives a copy of a work permission to reproduce, adapt or distribute the computer program as long as any resulting copies or adaptations are also bound by the same copyleft licensing scheme.
While knowing how open source projects operate and organize into complex networks may be interesting from a social and economic perspective, there are other implications of network science that are more relevant to the legal field, and that is in the area of copyleft licensing.