(chemistry) The chemical compound Fe₂O₃, iron oxide where iron has a valence of +3.

(US) Initialism of Federal Emergency Relief Administration.

Either of two species of fern in the genus Asplenium (Asplenium rhizophyllum or Asplenium sibiricum) that produce new plantlets from the tips of their leaves.

Non-Oxford British English standard spelling of fertilize.

(of a plant) Capable of self-fertilization.

Many species of ferns in genus Dryopteris.

An evergreen fern (Polystichum acrostichoides) of eastern North America.

Dryopteris filix-mas, from which is derived a vermifuge preparation.

plural of Ferris wheel

A specialized garden for the cultivation and display of ferns. / An area naturally abundant in ferns.