cachinnation

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Related to cachinnate: surcease, Indagate

cachinnation

 [kak″ĭ-na´shun]
excessive, hysterical laughter.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

cach·in·na·tion

(kak'i-nā'shŭn),
Laughter without apparent cause, often observed in schizophrenia.
[L. cachinno, to laugh immoderately and loudly]
Farlex Partner Medical Dictionary © Farlex 2012

cach·in·na·tion

(kak'i-nā'shŭn)
Laughter without apparent cause, often observed in schizophrenia.
[L. cachinno, to laugh immoderately and loudly]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012