planformer is the feminine plural indefinite of planform.

planformN

North Sámi

plánavuohkiN

Norsk-nordsamisk ordbokdict-nob-sme/src/N_nobsme.xml:145417Edit on GitHub Suggest

Case	Sg	Pl
Indef	planform	planformer
Def	planformen / planforma	planformene