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Dictionary

pro•to•ne•ma

Pronunciation: (prō"tu-nē'mu), [key]
—n.,
—pl. -ma•taPronunciation: (-mu-tu). [key] Bot.
a primary, usually filamentous structure produced by the germination of the spore in mosses and certain related plants, and from which the leafy plant which bears the sexual organs arises as a lateral or terminal shoot.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

proton

protonotary

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