| pontifex | (noun) a member of the highest council of priests in ancient Rome | - |
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| pontiff | (noun) the head of the Roman Catholic Church | Synonyms: Bishop of Rome, Catholic Pope, Holy Father, pope, Roman Catholic Pope, Vicar of Christ |
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| pontifical | (noun) the vestments and other insignia of a pontiff (especially a bishop) | - |
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| pontificate | (noun) the government of the Roman Catholic Church | Synonyms: papacy |
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| pontoon | (noun) a float supporting a seaplane | - |
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| (noun) (nautical) a floating structure (as a flat-bottomed boat) that serves as a dock or to support a bridge | - |