“At the Wedding: Watch the Bride Rip Into Her Jerk Groom”#AlgorithmicBias

General Definition

Discrimination is the act of treating someone unfairly or less favorably because of their group, identity, or characteristics.
collinsdictionary.com
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According to the Collins Dictionary, it’s “the practice of treating one person or group of people less fairly … than other people or groups.”
collinsdictionary.com

It can also mean “the ability to notice and understand the difference between things,” though in most social contexts it means unfair treatment.
collinsdictionary.com

In an Algorithmic / AI Context

Algorithmic discrimination (or “automated discrimination”) happens when a computer system (or AI) produces unfair outcomes that disadvantage a person or group based on characteristics like race, gender, age, etc.
Law Insider

This is a kind of “disparate impact”: the algorithm may treat different groups in systematically different ways, even if that was not explicitly programmed.