Webster’s Revised Unabridged Dictionary · 1913
Œdema
Œ·de′ma, n. [NL., from Gr. οἴδημα a swelling, tumor, fr. οἰδεῖν to swell.] (Med.) A swelling from effusion of watery fluid in the cellular tissue beneath the skin or mucous membrance; dropsy of the subcutaneous cellular tissue. [Written also edema.]