Stereotyping and prejudice against individuals or groups because of their age. The term was coined in 1969 by gerontologist Robert N. Butler, M.D., founder, president and CEO of the International Longevity Center at Columbia University, to describe discrimination against seniors and patterned on sexism and racism. Dr. Butler defined ageism as a combination of three connected elements: prejudicial attitudes towards older people, old age and the aging process; discriminatory practices against older people; and institutional practices and policies that perpetuate stereotypes about older people.
REFERENCE: Media Takes: On Aging