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pi-mesic, adj.

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Forms:  19– π-mesic, 19– pi-mesic. (Show Less)
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Origin: Formed within English, by compounding. Etymons: pi n.1, mesic adj.2
Etymology: < pi n.1 + mesic adj.2, after pi-meson n. Compare slightly later pi-mesonic adj., pionic adj.
Particle Physics.
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  = pionic adj.

1952   Physical Rev. 88 134/1   We have found direct evidence for π-mesic atom formation with the nuclei of carbon, oxygen, and beryllium.
1984   Progr. Theoret. Physics 72 106   The dominant decay mode of the Λ particle is the pi-mesic decay.

1952—1984(Hide quotations)

 

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    This entry has been updated (OED Third Edition, June 2006).