Slavic

[slah-vik, slav-ik] /ˈslɑ vɪk, ˈslæv ɪk/
noun
1.
a branch of the Indo-European family of languages, usually divided into East Slavic (Russian, Ukrainian, Byelorussian), West Slavic (Polish, Czech, Slovak, Sorbian), and South Slavic (Old Church Slavonic, Macedonian, Bulgarian, Serbo-Croatian, Slovene). Abbr.: Slav.
adjective
2.
of or pertaining to the Slavs or their languages.
Also, Slavonic.
Origin
1805-15; Slav + -ic
Related forms
anti-Slavic, adjective, noun
non-Slavic, adjective
British Dictionary definitions for Slavic

Slavic

/ˈslɑːvɪk/
noun, adjective
1.
another word (esp US) for Slavonic

Slavonic

/sləˈvɒnɪk/
noun
1.
a branch of the Indo-European family of languages, usually divided into three subbranches: South Slavonic (including Old Church Slavonic, Serbian, Croatian, Bulgarian, Bosnian, etc), East Slavonic (including Ukrainian, Russian, etc), and West Slavonic (including Polish, Czech, Slovak, etc)
2.
the unrecorded ancient language from which all of these languages developed
adjective
3.
of, denoting, or relating to this group of languages
4.
of, denoting, or relating to the people who speak these languages
Word Origin
C17: from Medieval Latin Slavonicus, Sclavonicus, from Slavonia
Word Origin and History for Slavic
adj.

1813; see Slav + -ic. Earlier in same sense was Slavonic (1640s), from Slavonia, a region of Croatia; Slavonian (1570s). As a noun in reference to a language group from 1812.