Definition of edema

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e·de·ma also oe·de·ma    (-dm) KEY 

NOUN:
pl. e·de·mas or e·de·ma·ta  (-m-t) KEY 

1. Pathology An excessive accumulation of serous fluid in tissue spaces or a body cavity.
2. Botany Extended swelling in plant organs caused primarily by an excessive accumulation of water.

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ETYMOLOGY:
Middle English ydema, from Greek oidma, a swelling, from oidein, to swell

OTHER FORMS:
e·dema·tous  (-dm-ts) KEY (Adjective)