What term is used to describe discrimination against individuals due to their age?

The term that describes discrimination against individuals due to their age is "ageism." This concept encompasses stereotypes, prejudice, and discrimination aimed at individuals based solely on their age, often manifesting in a negative perception of older adults. Ageism can lead to systemic marginalization in various contexts, such as employment, healthcare, and social interactions, deeply influencing societal attitudes toward aging.

The other terms, while they may relate to age or generational issues, are not the widely recognized term used in academic and professional discussions regarding discrimination based on age. Aging Bias could refer to a preference or bias against individuals as they age but lacks the established connotation and scope of ageism. Generational discrimination is too broad and may refer to biases between different age groups rather than focusing exclusively on age-related discrimination. Senior prejudice, while it implies bias against older individuals, is not commonly used in established literature and lacks the formal recognition that "ageism" carries.