Dictionary
troph•o•some
Pronunciation: (trof'u-sōm", trō'fu-), [key]—
n. Zool.
1. an organ in deep-sea tube worms that is colonized by bacteria supplying the host worm with food and energy.
2. a similar organ in other marine worms.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.