Meaning & Definition
noun
A weight affixed to a pendulous device, typically used to regulate the movement of clock mechanisms.
The clock's pendulum swung steadily, marking the passage of time.
A body that swings back and forth from a fixed point, often used in physics to demonstrate principles of motion.
In the physics class, we observed how the pendulum demonstrated simple harmonic motion.
A situation in which something oscillates or fluctuates between alternatives.
The political pendulum seemed to swing back and forth between liberal and conservative ideologies.
Etymology
From Latin 'pendulus' meaning hanging.
Common Phrases and Expressions
pendulum effect:
The tendency of a situation to sway back and forth between two extremes.
swing of the pendulum:
The movement from one extreme to another.
Slang Meanings
Inconsistent behavior, often swinging between two choices.
His decision-making is a real pendulum—today he wants to vacation in Hawaii, tomorrow he's thinking of Europe.
Refers to a person who frequently changes opinions.
She's such a pendulum; just last week she was convinced that was the best movie ever.