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| gna·thos·tome [ náythə stm, náthə stm ] (plural gna·thos·tomes) |
noun |
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| Definition: |
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animal with backbone and jaws: a vertebrate that has a mouth with jaws, as do all vertebrates except agnathans. Lampreys and hagfish are gnathostomes. Superclass Gnathostomata.
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| [Early 20th century. < Greek gnathos "jaw" + stoma "mouth"] |
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