Prejudice against older people, similar to racism and sexism in its negative stereotypes.

Unfair prejudice or discrimination on the grounds of a person's age.

Prejudice against people because of their age.

"discrimination against people based on age," coined 1969 by U.S. gerontologist Dr. Robert N. Butler, from age + -ism, on pattern of racism, sexism. Related: Ageist.

Prejudice or discrimination on the basis of a person’s age. It is against the law to discriminate against anyone in the workplace because of their actual or assumed age.

Prejudice against a person on the grounds of age in the belief that the age category is inferior to other age categories and that unequal treatment is therefore justified.

noun. 1. the poor treatment of certain individuals due to how old they are- most commonly seen in occupational and medical environments. Reference: age discrimination. 2. the propensity to be discrimi [..]

Ageism is a clear-cut bias, prejudice against, or stereotyping of individuals of an age group. While most often used to describe negative attitudes against older or elderly people it can also be used [..]

(n) discrimination against middle-aged and elderly people

Ageism refers to stereotyping and generalising on the basis of age, typically old age, and is spreading to middle age as the boundaries of middle age move into what was once considered old age. (...

Stereotyping, prejudice, and discrimination against individuals or groups on the grounds of their age.

Biased Behaviors or Attitudes, differential treatment, unequal access to Social Participation or opportunities based on age.

 discrimination based on age.

 Any attitude, action, or institutional structure, which subordinates a person or group because of age or any assignment of roles in society purely on the basis of age (Traxler, 1980, p.4).  

Prejudice against folks due to their age.

any criticism or negative sentiment that affects young or old people, regardless of validity.

The treating of a person or people differently from others based on assumptions or stereotypes relating to their age.