| antibaryon | (noun) the antiparticle of a baryon; a hadron with a baryon number of -1 | - |
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| baryon | (noun) any of the elementary particles having a mass equal to or greater than that of a proton and that participate in strong interactions; a hadron with a baryon number of +1 | Synonyms: heavy particle |
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| dacryon | (noun) the craniometric point at the junction of the anterior border of the lacrimal bone with the frontal bone | - |
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| karyon | (noun) a part of the cell containing DNA and RNA and responsible for growth and reproduction | Synonyms: cell nucleus, nucleus |
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| ophryon | (noun) the craniometric point in the midline of the forehead immediately above the orbits | - |
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