Curvatura da espinha dorsal para trás.
(Do gr. opisthen + cuphosis)
o-pis-to-ci-fo-se
pose, dose, metamorfose, metemptose, hidrocolpose, osteoelcose, aloiobiose, calcinose, electrosmose, hipoinose, pseudomelanose, aeroneurose, ceratomicose, hemotoxicose, anaplerose