Rejection

Rejection, or the verb reject, may refer to:

Social rejection, in psychology, an interpersonal situation that occurs when a person or group of people exclude an individual from a social relationship
Transplant rejection, in medicine, the immune reaction of a host organism to a foreign biological tissue, such as in a transplantation
In telecommunications, rejection is the receiving of the desired signal without interference from another undesired one.
In basketball, rejection is a slang term for a block
In mathematics, the rejection of a vector a from a vector b is the component of a perpendicular to b, as opposed to its projection, which is parallel to b.
In statistics, rejection of a null hypothesis in favour of an alternative hypothesis when doing a hypothesis test.
In statistics, rejection sampling is a technique used to generate observations from a distribution
In zoology, the shunning of one or more animals in a litter
Rejection of Jesus, described in the New Testament

Art, media and entertainent