IPA: /ˈstrɛsər/
KK: /ˈstrɛsər/
A thing or situation that causes stress or anxiety to a person or organism.
Work deadlines can often be a major stressor for many employees.
Stressor → It is formed from "stress" (from Latin "stringere", meaning to draw tight) and "-or" (meaning one who or that which). The word "stressor" refers to something that causes stress or tension.
Think of something that 'draws tight' ('stringere') in your life, which is why it is called a stressor.