plumiform
/ˈpluːmɪfɔːm/Zoology
adjective
Having the shape or form of a feather; penniform; plumose.
Origin
Mid 18th century; earliest use found in Benjamin Martin (bap. 1705, d. 1782), lecturer on science and maker of scientific instruments. From classical Latin plūma plume + -iform. In plumiformly after German federartig.