symbolp object → generalized-boolean

object — an object.

generalized-boolean — a generalized boolean.

Returns true if object is of type symbol; otherwise, returns false.

(symbolp 'elephant) → true 
(symbolp 12) → false 
(symbolp nil) → true 
(symbolp '()) → true 
(symbolp :test) → true 
(symbolp "hello") → false

keywordp, symbol, typep

(symbolp object) ≡ (typep object 'symbol)