from The American Heritage® Dictionary of the English Language, 4th Edition

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

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An excessive accumulation of serum in tissue spaces or a body cavity
  • n. A similar swelling in plants caused by excessive accumulation of water

from the GNU version of the Collaborative International Dictionary of English

  • n. Same as œdema.

from The Century Dictionary and Cyclopedia

  • n. In pathology, a puffiness or swelling of parts arising from accumulation of serous fluid in interstices of the areolar tissue: as, edema of the eyelids.
  • n. A genus of bombycid moths, founded by Walker in 1855, having the palpi pilose, rather long, ascending in the male and porrect in the female, with the third joint lanceolate.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. swelling from excessive accumulation of watery fluid in cells, tissues, or serous cavities


Middle English ydema, from Greek oidēma, a swelling, from oidein, to swell.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ancient Greek οἴδημα (oidēma, "swelling"), from οἰδέω (oideō, "I swell"). (Wiktionary)



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