Siphonoma is a term commonly used in marine biology to refer to a particular type of ascidian, or sea squirt. The word is spelled as "sigh-fuh-NOH-mah" with stress on the second syllable. The first syllable, "sigh," is pronounced with the long "i" sound, while the second syllable, "fuh," is pronounced with the short "u" sound. The third syllable, "NOH," is pronounced with the long "o" sound, and the final syllable, "mah," is pronounced with the short "a" sound.
A neoplasm of tubular structure.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.