The term "pda" typically refers to "public display of affection." It describes physical gestures of affection between people in a public setting, such as holding hands, hugging, or kissing. This behavior can vary in acceptability depending on cultural norms and social contexts.
The acronym "PDA" stands for "public display of affection." The use of the term became popular in the late 20th century as societal norms around public behavior and romantic relationships evolved.