Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

labrum

play
noun la·brum \ˈlā-brəm\

Definition of labrum

  1. 1 :  an upper or anterior mouthpart of an arthropod consisting of a single median piece in front of or above the mandibles

  2. 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 and Etymology of labrum

New Latin, from Latin, lip, edge — more at lip


First Known Use: 1826


Medical Dictionary

labrum

play
noun la·brum \ˈlā-brəm\

Medical Definition of labrum

plural

labra

\-brə\ play
  1. 1:  an upper or anterior mouthpart of an arthropod consisting of a single median piece in front of or above the mandibles

  2. 2:  a fibrous ring of cartilage attached to the rim of a joint: asa:  glenoid labrumb:  acetabular labrum




Learn More about labrum

  1. Medical Dictionary: Definition of labrum


Seen and Heard

What made you want to look up labrum? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

mysterious, holy, or spiritual

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

lavender-fields-in-france

Which of these is a synonym of caesura?

megillah torrent rebellion interruption
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ