Definition of "cappa" [cappa]

• The thick wall on the proximal side of the corpus of a pollen grain. (noun)

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• "Cardinal O’Brien arrived in cappa magna, seen in Derry for the first time since Vatican II."
• "It acts as a particular type of receptor called a cappa (ph) receptor."
• "The determination itself was a public disputation, after which the determiner might wear the bachelor's "cappa" and lecture on the Organon."