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Comprehensive
Dictionary Suite
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cultured pearl a pearl formed by an oyster or mussel around an irritant such as a seed pearl inserted in its body under controlled conditions.
nonirritant combined form of irritant.
pearl a smooth, hard, glossy deposit, valued as a gem, that is formed inside the shells of oysters and some other mollusks to cover an irritant object such as a grain of sand. [1/8 definitions]