Webster’s Revised Unabridged Dictionary · 1913
Eclampsia
Ec·lamp′si·a, n. [NL., from Gr. ἔκλαμψις a shining forth, fr. ἐκλάμπειν to shine forth; ἐκ out + λάμπειν to shine.] (Med.) A fancied perception of flashes of light, a symptom of epilepsy; hence, epilepsy itself; convulsions.
☞ The term is generally restricted to a convulsive affection attending pregnancy and parturition, and to infantile convulsions.