observer

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

To resolve this, scientists usually propose that when a quantum system is measured or interacts with an observer, its wavefunction collapses into a single outcome.

From Science Daily • May 3, 2026

Instead of us looking at nature, the friendly gorilla family upended the narrative and took on the role of the curious observer of a mysterious ape called Attenborough.

From BBC • Apr. 27, 2026

Lewis, Jefferson’s private secretary, had grown up a rambler and a keen observer of the natural world.

From The Wall Street Journal • Apr. 16, 2026

Jim Grant, the long-time markets observer, says there’s a big disconnect between official economic data and consumer perceptions of it.

From MarketWatch • Apr. 14, 2026

A civilian observer was a dangerous liability for the platoon—they’d have to watch out for him when they should be focused only on the mission.

From "Most Dangerous: Daniel Ellsberg and the Secret History of the Vietnam War" by Steve Sheinkin