\Syn*an"throse"\, n. [From NL. Synanther[ae] the
Composit[ae]; Gr. sy`n with + ? blooming.] (Chem.)
A variety of sugar, isomeric with sucrose, found in the
tubers of the Jerusalem artichoke ({Helianthus tuberosus}),
in the dahlia, and other Composit[ae].