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From our dictionary:
1. of or pertaining to the ordinary, everyday, current form of a language; vernacular: a poet with a keen ear for demotic rhythms.
2. of or pertaining to the common people; popular.
3. of, pertaining to, or noting the simplified form of hieratic writing used in ancient Egypt between 700 b.c. and a.d. 500.
1. demotic script.
2. (cap.) Also called Romaic. the Modern Greek vernacular (distinguished from Katharevusa).