Definition of "Appearance" :

noun: the act of appearing in public view

"The rookie made a brief appearance in the first period."

noun: pretending that something is the case in order to make a good impression

"They try to keep up appearances."

noun: formal attendance (in court or at a hearing) of a party in an action

noun: outward or visible aspect of a person or thing

noun: a mental representation

"I tried to describe his appearance to the police."

noun: the event of coming into sight