The Collaborative International Dictionary of English v.0.48:
Azollaceae \Azollaceae\ n. a family designation used in some classifications for the genus Azolla. Syn: family Azollaceae. [WordNet 1.5]WordNet (r) 3.0 (2006):
Azollaceae n 1: used in some classifications for the genus Azolla [syn: Azollaceae, family Azollaceae]