fern family fern·fa·mily uncommon noun 1. families of ferns and fern allies Synonymsfern family Related words Broader terms family Narrower terms HymenophyllaceaeOsmundaceaeSchizaeaceaeMarsileaceaeSalviniaceaeAzollaceaeOphioglossaceaeGleicheniaceae Parts Pteridophyta WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
