From Wiktionary, the free dictionary
- Graf (since the spelling reform of 1996)
Graph m (weak or mixed, genitive Graphen or (nonstandard) Graphs, plural Graphen)
The word may be declined, according to the weak or the strong pattern. The former is more original and standard, while the latter is often found in non-standard usage.
Declension of Graph [masculine, weak // mixed]
Graph n (strong, genitive Graphs, plural Graphe)
- (linguistics) glyph (symbol as the smallest unit in a text which has not yet been classified as a grapheme)