hy·dro·ni·um 
(hī-drōnē-əm)
(hī-drōnē-əm)n.
A hydrated hydrogen ion, H3O+. Also called hydronium ion.
[HYDR(O)- + (AMM)ONIUM.]
- Paul
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- Paul Bunyan
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- Paulette Williams.
- Paul Eugene
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- Paul I
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- Pauli
- Pauli exclusion principle
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