noun
Au (chemical symbol for gold), gold
B1
Au: chemical symbol for gold; refers to the element gold. In German the symbol form can be treated as neuter: das Au; plural often written die Au‑Symbole. Commonly people use das Gold for the metal in everyday language. Used mainly in scientific, financial, or jewelry contexts.
Examples
Der alte Ring ist aus Au gefertigt.
The old ring is made of gold.
Im Periodensystem steht Au für Gold.
In the periodic table, Au stands for gold.
Das laute 'Au' wurde im Büro gehört, weil ein Mitarbeiter sich den Finger einklemmte.
The loud 'ouch' was heard in the office because an employee trapped his finger.
Details
Mnemonics
Visualize the periodic table with the 'Au' cell glowing bright gold.
Sounds like 'ow' — but remember Au = Aurum (Latin) = gold.
das — think of 'das Element' (neuter); Au as a chemical element is neuter.
Notes
Chemical symbol from Latin 'Aurum'. Treated here as a noun referring to the element/symbol.