Cachinnation
Origin
From cachinnate + -ion
Full definition of cachinnation
Noun
cachinnation
(plural cachinnations)- Convulsive, loud laughter.
- 1920, Peter B. Kyne, The Understanding Heart, Chapter VHis shrill, mirthless cachinnation followed Monica as she headed up-hill.
- 1928, H. P. Lovecraft, ,After midnight their shrill notes burst into a kind of pandemoniac cachinnation which filled all the countryside, and not until dawn did they finally quiet down.