Formed into crystals or having a crystalline structure; now largely superseded by the spelling 'crystallized' in modern English.
From 'crystal' + '-ed' (past participle suffix), representing an older spelling convention before 'crystallize/crystallized' became standardized.
Language constantly evolves—'crystaled' was perfectly correct 200 years ago, but we collectively decided 'crystallized' looked better and sounded more scientific, showing how spelling isn't fixed but democratically chosen!
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