< /ɪˈdi mə tə/. Pathology.
- effusion of serous fluid into the interstices of cells in tissue spaces or into body cavities.
- Plant Pathology.
- a small surface swelling of plant parts, caused by excessive moisture.
- any disease so characterized.
noun plural -mata (-mətə)
- the usual US spelling of oedema
c.1400, from medical Latin, from Greek oidema (genitive oidematos) “a swelling tumor,” from oidein “to swell,” from oidos “tumor, swelling,” from PIE *oid- “to swell;” cf. Latin aemidus “swelling,” Armenian aitumn “a swelling,” Old Norse eista “testicle,” Old English attor “poison” (that which makes the body swell), and the first element in Oedipus.
n. pl. e•de•mas
- An accumulation of an excessive amount of watery fluid in cells, tissues, or serous cavities.
- An accumulation of an excessive amount of watery fluid in cells, tissues, or body cavities. Edema can be mild and benign as in pregnancy or prolonged standing in the elderly, or a serious sign of heart, liver, or kidney failure, or of other diseases.