an occasion when someone appears in public:
It was his first appearance on television/television appearance as president.
She will be making a public appearance, signing copies of her latest novel.
[ C ] an occasion when someone goes to court to be officially involved in a trial:
This was the defendant's third court appearance for the same offence.
B2 [ C ] a public performance by an entertainer:
He made his first stage/TV appearance at the age of six.
put in/make an appearance
to be present somewhere for a short time:
I didn't really want to go to the party, but I thought I'd better put in an appearance.