field

(fēld )

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1. In geography, an open expanse of land.
2. In the arts and sciences, a discipline or an area of study.
3. In physics, a region of space in which a given force operates or a given condition exists.
4. In experimental situations, a place of natural conditions, as opposed to a controlled environment, such as a laboratory or a hospital.
5. A portion of a tissue, esp. one that surrounds a lesion.
6. A localized region of the body to be treated with topical medications or radiation.

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