The Collaborative International Dictionary of English v.0.48:

Marantaceae \Marantaceae\ prop. n.
   A natural family of tropical perennial herbs with usually
   starchy rhizomes, including the arrowroot; the arrowroot
   family.

   Syn: family Marantaceae, arrowroot family.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Marantaceae
    n 1: tropical perennial herbs with usually starchy rhizomes
         [syn: Marantaceae, family Marantaceae, arrowroot
         family]