EtymEx

crystalline

/ˈkrɪstəlaɪn/adjective

Made of, resembling, or structured like crystal

From Greek κρύσταλλος (Clear ice).

Lineage

κρύσταλλος

-ῐνος

GreekLatinRomanceGermanicnot directly attestedSelect a stage for details, or drag it

The story

Ancient Greeks looked at clear quartz and imagined that it was ice frozen so solid that even the summer sun could not thaw it. They called it κρύσταλλος, from a word connected with frost and the hard crust formed by freezing—a chilly origin for something now associated with glittering jewelry and laboratory precision. Greek then added -ῐνος, an adjectival tag meaning “of or like,” producing κρυστάλλινος: literally, “crystal-ish.” The word passed through Latin and Old French before appearing in English as crystalline in the late 14th century, when writers used it for both transparent purity and crystal-like material. So whenever prose is called crystalline, it carries a tiny fossil of an ancient mistake: what looked like frozen water was actually stone.

Related words

Antonyms
opaque, cloudy
Confused with
crystallized, crystaline

Words from the same roots

κρύσταλλος · Ancient Greek, ‘Clear ice; crystal’

Derivedcrystal, crystallize, crystallinity, crystallomancy, quartz, transparent

-ῐνος · Ancient Greek, ‘Of, like, or pertaining to’

Derived-ine, aspirin, benzene, caffeine, feminine, divine

Sources