oedema
UK[ɪˈdiːmə]US[ɪˈdiːmə]
n
A condition characterized by an excess of watery fluid collecting in the cavities or tissues of the body.
Etymology
The word 'oedema' is a direct borrowing from the Greek 'oidēma', meaning 'a swelling' or 'tumor'. This Greek term itself derives from the verb 'oidein', which means 'to swell'. The etymological logic is beautifully direct: the core concept of swelling has been preserved from its ancient Greek origin into its precise modern medical usage. It entered English via Latin and medical Latin, retaining its specialized meaning for pathological fluid accumulation.
Analysis
The word is a simplex loanword from Greek. It is not productively segmented using modern English spelling substrings.
Examples
The patient presented with severe pitting oedema in the lower limbs.
Pulmonary oedema is a serious condition requiring immediate treatment.
The inflammation caused localized oedema around the ankle joint.