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magnetic anomaly

American  

noun

Geology.
  1. a departure from the normal magnetic field of the earth.


Etymology

Origin of magnetic anomaly

First recorded in 1895–1900

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.

Navy helicopters, which can land on the warships and hover just above the waves, scan surrounding waters using equipment including magnetic anomaly detectors that sense metal below.

From The Wall Street Journal

His project, called Lunar Vertex, will investigate the magnetic anomaly in a region called Reiner Gamma, which contains a bright surface marking shaped like a tadpole.

From Scientific American

This anomaly, like the muon’s magnetic anomaly, hints at an unknown “influencer” — a particle or force interfering with the reaction.

From New York Times

The Great Blue Spot “is really a magnetic anomaly,” Connerney said.

From Washington Post

According to new findings gathered from a magnetic anomaly near Jupiter’s equator known as the Great Blue Spot, Jupiter has experienced a change in its magnetic field during the last five years, and the Great Blue Spot is slowly drifting eastward at approximately 2 inches per second, taking 350 years to make its way around the planet.

From The Verge