[mahy-kroh-uh-gresh-uh n]
  1. a subtle but offensive comment or action directed at a minority or other nondominant group that is often unintentional or unconsciously reinforces a stereotype: microaggressions such as "I don't see you as black."
  2. the act of discriminating against a nondominant group by means of such comments or actions: The diversity committee discussed the issue of microaggression toward women on campus.

Origin of microaggression

1970; coined by psychiatrist Chester M. Pierce (born 1927); micro- + aggression
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018