a hypothetical particle having no charge, zero spin, and small mass: postulated in some forms of quantum chromodynamics.
(physics) a hypothetical neutral elementary particle postulated to account for certain conservation laws in the strong interaction
1978, from axial + scientific suffix -on.
axioplasm axioplasm ax·i·o·plasm (āk’sē-ə-plāz’əm) n. Variant of axoplasm.
axioversion axioversion ax·i·o·ver·sion (āk’sē-ō-vûr’zhən, -shən) n. An abnormal inclination of the long axis of a tooth.
axipetal axipetal ax·ip·e·tal (āk-sĭp’ĭ-tl) adj. Centripetal.
the line about which a rotating body, such as the earth, turns. Mathematics. a central line that bisects a two-dimensional body or figure. a line about which a three-dimensional body or figure is symmetrical. Anatomy. a central or principal structure, about which something turns or is arranged: the skeletal axis. the second cervical vertebra. Botany. […]