- cultured pearl
also culture pearl
: a natural pearl grown under controlled conditions (as by inserting a seed pearl into the mantle of an oyster and keeping the oyster in a sea bed for some years)
* * *a pearl induced to form by placement of a grain of sand or another irritating object within the shell of a pearl oyster or mussel.Also, culture pearl.[1920-25]
* * *cultured pearl nounA pearl grown round a small foreign body deliberately introduced into an oyster's shell• • •Main Entry: ↑culture————————cultured pearlA true pearl formed by artificial means, eg by planting a piece of mother-of-pearl wrapped in oyster epidermis in the body of an oyster• • •Main Entry: ↑pearl
* * *Thesaurus: natural and artificial substances used in jewelleryhyponym
* * *cultured pearl,a natural pearl produced by planting a tiny foreign body in an oyster to irritate its internal membranes and cause it to secrete a protective substance, that eventually hardens, around the irritating foreign body.
Useful english dictionary. 2012.