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(eh-FYOO-zhun)
| | An abnormal collection of fluid in hollow spaces or between tissues of the body. For example, a pleural effusion is a collection of fluid between the two layers of membrane covering the lungs. |
| Previous Definitions: | EF5, efalizumab, efaproxiral, effector cell, efficacy | | Next Definitions: | eflornithine, EFTs, EGb761, EGFR, ejaculation |
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