An archaic or variant spelling of 'crystallizing'; the process of forming into crystals or developing a crystalline structure.
From 'crystal' + '-ing' (present participle suffix), representing an older spelling form before standardization on 'crystallizing'.
English spelling wasn't standardized until quite recently—older books show 'crystaling' or 'crystalling,' proving that even scientific terms had multiple 'correct' spellings that scholars had to standardize.
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