from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Botany Shaped like a funnel, as the corolla of a petunia or a morning glory.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. having the shape of a funnel
from the GNU version of the Collaborative International Dictionary of English
- adj. Having the form of a funnel, or tunnel; that is, expanding gradually from the bottom upward, as the corolla of some flowers; infundibuliform.
from The Century Dictionary and Cyclopedia
- Having the form of a funnel, or inverted hollow cone; specifically, in botany, applied to a monopetalous corolla shaped like a funnel, in which the tube enlarges gradually from below, but expands widely at the summit; infundibuliform.
funnel + -form (Wiktionary)
Calyx inferior, funnelform, with 4-5 sepals as long as the corolla.