labrum


la·brum

noun \ˈlā-brəm\

Definition of LABRUM

1
:  an upper or anterior mouthpart of an arthropod consisting of a single median piece in front of or above the mandibles
2
:  a ring of fibrous cartilage forming the margin of the shallow cavity of the upper part of the scapula by which the humerus articulates with the pectoral girdle

Origin of LABRUM

New Latin, from Latin, lip, edge — more at lip
First Known Use: 1826

la·brum

noun \ˈlā-brəm\   (Medical Dictionary)

Medical Definition of LABRUM

1
: an upper or anterior mouthpart of an arthropod consisting of a single median piece in front of or above the mandibles
2
: a fibrous ring of cartilage attached to the rim of a joint; especially : glenoid labrum

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