One of the mysteries of the English language finally explained.
Crystalline, resembling or composed of crystal.
So as to be suggestive of crystal, especially in transparency.
Mid 16th century; earliest use found in Robert Record (c1512–1558), mathematician. From crystal + -ly<br>late 17th century; earliest use found in Ezekiel Hopkins (1634–1690), bishop of Derry. From crystal + -ly.
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