Pronunciation: (mon"u-pō'dē-um), [key]
—pl. -di•aPronunciation: (-dē-u). [key] Bot.
a single main axis that continues to extend at the apex in the original line of growth, giving off lateral branches beneath in acropetal succession. Cf. sympodium.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.