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Definition of Neutral zone
1. Proper noun. (historical) A former area between Saudi Arabia and Iraq, abolished 1991. ¹
2. Noun. (American football) zone between the defensive line of scrimmage and the offensive line of scrimmage. ¹
3. Noun. (ice hockey) zone on the playing surface between the attacking zone and the defending zone as delineated by the two blue lines. ¹
¹ Source: wiktionary.com
Medical Definition of Neutral zone
1. In dentistry, the potential space between the lips and cheeks on one side and the tongue on the other; natural or artificial teeth in this zone are subject to equal and opposite forces from the surrounding musculature. (05 Mar 2000)