OPISTHOTONOS
opisthotonos
(noun) severe spasm in which the back arches and the head bends back and heels flex toward the back
Source: WordNet® 3.1
Etymology
Noun
opisthotonos (uncountable)
(medicine) A tetanic spasm in which the body is bent backwards and stiffened.
Coordinate terms
• emprosthotonos, emprosthotonus
• orthotonos, orthotonus
• pleurosthotonos, pleurosthotonus
Source: Wiktionary
Op`is*thot"o*nos, n. Etym: [NL., from Gr. (Med.)
Definition: A tetanic spasm in which the body is bent backwards and
stiffened.
Source: Webster’s Unabridged Dictionary 1913 Edition