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Webster 1913 Edition


Cachinnation

Cachˊin-na′tion

(kăkˊĭn-nā′shŭn)
,
Noun.
[L.
cachinnatio
, fr.
cachinnare
to laugh aloud, cf. Gr.
καχάζειν
.]
Loud or immoderate laughter; – often a symptom of hysterical or maniacal affections.
Hideous grimaces . . . attended this unusual
cachinnation
.
Sir W. Scott.

Webster 1828 Edition


Cachinnation

CACHINNATION

,
Noun.
A variety of chalcedony, which is a subspecies of quartz, usually milk white, some times grayish or yellowish white; opake or slightly translucent at the edges. Its fracture is even, or conchoidal with large cavities, sometimes dull, sometimes pearly or glossy. It often envelops common chalcedony; the two minerals being united by insensible shades. It also associates with flint and semi-opal.