ancient sacred Hindu book, 1734, from Sanskrit veda, literally "knowledge, understanding," especially "sacred knowledge," from root vid- "to know" (from PIE root *weid- "to see"). The books are the Rig-, Yajur-, Sama-, and Atharva-veda.
Middle English -ik, -ick, word-forming element making adjectives, "having to do with, having the nature of, being, made of, caused by, similar to," from French -ique and directly from Latin -icus or from cognate Greek -ikos "in the manner of; pertaining to." From PIE adjective suffix *-(i)ko, which also yielded Slavic -isku, adjectival suffix indicating origin, the source of the -sky (Russian -skii) in many surnames. In chemistry, indicating a higher valence than names in -ous (first in benzoic, 1791).
In Middle English and after often spelled -ick, -ike, -ique. Variant forms in -ick (critick, ethick) were common in early Modern English and survived in English dictionaries into early 19c. This spelling was supported by Johnson but opposed by Webster, who prevailed.
Others are reading
Definitions of Vedic from WordNet
of or relating to the Vedas or to the ancient Sanskrit in which they were written;