Relating to or having the nature of crystal; crystalline in character or appearance.
Derived from Greek 'krystallos' with the suffix '-ic' (meaning 'of or relating to'), creating an adjectival form used in scientific contexts from the 17th century onward.
The suffix '-ic' is one of the most productive word-building tools in English science—add it to almost any substance and you get an adjective, which is why we have 'basic' (from 'base'), 'acidic' (from 'acid'), and 'crystic' (from 'crystal').
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