Everyday verbal, nonverbal, and environmental slights, snubs, or insults, whether intentional or unintentional, that communicate hostile, derogatory, or negative messages to target persons based solely upon their marginalized group membership.

(from Diversity in the Classroom, UCLA Diversity & Faculty Development, 2014)

To further explore this topic, check out the PDF Recognizing Microaggressions and the Messages They Send and the videos in our Understanding Microaggressions playlist.