mandible

noun

man·​di·​ble ˈman-də-bəl 

1

a

: jaw sense 1a

especially : a lower jaw consisting of a single bone or of completely fused bones

b

: the lower jaw with its investing soft parts

c

: either the upper or lower segment of the bill of a bird

2

: any of various invertebrate mouthparts serving to hold or bite food materials

especially : either member of the anterior pair of mouth appendages of an arthropod often forming strong biting jaws

mandibular

man-ˈdi-byə-lər 

adjective

mandibulate

man-ˈdi-byə-lət 

adjective

Examples of mandible in a Sentence

Recent Examples on the Web

The team identified the genomic variation by extracting DNA from the Well-man’s mandible, the lower part of the jaw. —Hannah Peart, NBC News, 28 Oct. 2024

There were 451 bones at the site, and some of these included mandibles with molars, which are good at preserving relatively intact DNA. —Joshua Rapp Learn, Discover Magazine, 21 Oct. 2024

This also happens to be one of the last Bugs Bunny shorts made before another animator in Clampett’s unit, Robert McKimson, refreshed the bunny’s design: raising him a little taller, lengthening his ears, and widening his mouth to accentuate his murine mandibles. —Eric Vilas-Boas, Vulture, 8 Oct. 2024

The mockup of the insect’s head shows a rough circle adorned with two antennae, a small mandible hidden underneath and eyestalks protruding from the sides. —Olatunji Osho-Williams, Smithsonian Magazine, 22 Oct. 2024

Word History

Etymology

Middle English, from Late Latin mandibula, from Latin mandere to chew; probably akin to Greek masasthai to chew

First Known Use

15th century, in the meaning defined at sense 1a

Kids Definition

mandible

noun

man·​di·​ble ˈman-də-bəl 

1

a(1)

: a lower jaw of a vertebrate consisting of a single bone or of bones that are completely united

(2)

: the lower jaw with its surrounding soft parts

b

: either the upper or lower part of the bill of a bird

2

: either of the first pair of mouthparts of some invertebrates and especially arthropods (as an insect or crustacean) that often form biting organs

Medical Definition

mandible

noun

man·​di·​ble ˈman-də-bəl 

1

a

: jaw sense 1

especially : jaw sense 1b

b

: the lower jaw with its investing soft parts

2

: any of various invertebrate mouthparts serving to hold or bite food materials

especially : either member of the anterior pair of mouth appendages of an arthropod often forming strong biting jaws