diagramma is the neuter plural definite of diagram.

diagramN

Kven

diakrammiN

Norwegian Bokmål – Kvendict-nob-fkv/src/N_nobfkv.xml:20322Edit on GitHub Suggest

diagrámmaN

Norsk-nordsamisk ordbokdict-nob-sme/src/N_nobsme.xml:229059Edit on GitHub Suggest

Case	Sg	Pl
Indef	diagram	diagramm
Def	diagrammet	diagramma