poor man's copyright
(algebra) A variable (usually x, y or z) whose value is to be found. / Any thing, place, or situation about which nothing is known; an unknown fact or piece of information.
plural of eco-region
(informal) The practice of mailing a sealed, dated copy of one's work to oneself as a proof of copyright ownership, rather than registering the work with a copyright office.
(sociology) Opposition to classism.
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