geloscopy en · NOUN
Etymology
From Ancient Greek γελάω (geláō, “to laugh”) + -scopy.
Meanings
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(rare, uncountable) Divination by means of laughter.
Long ago, followers of geloscopy believed the word you used to laugh revealed part of your personality! People who said “Ha!” when they laughed were considered to be honest but undependable[…]
2010, Bart King, Bart's King Sized Book of Fun, page 140: