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• rex
  rex

  noun

  king.
• Rex
  Rex

  noun

  a Belgian fascist party founded in 1935.

rex

¹ American  

[reks, reks] / rɛks, rɛks /

noun

Latin.

reges plural

1. king.

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Rex ² American  

[reks] / rɛks /

noun

1. a Belgian fascist party founded in 1935.

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Rex ³ American  

[reks] / rɛks /

noun

1. a male given name.

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Rex British  

/ rɛks /

noun

1. king: part of the official title of a king, now used chiefly in documents, legal proceedings, inscriptions on coins, etc Compare Regina 1

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Other Word Forms

Derived Forms

• Rexist
  noun

Inflected Forms

noun

• reges
  plural

Etymology

Origin of Rex

After Christus Rex, title of a publication put out by its founders

Example Sentences

Researchers chose the name Tylosaurus rex as a tribute to paleontologist John Thurmond.

From Science Daily • May 23, 2026

The holotype specimen for T. rex is currently displayed at the Perot Museum in Dallas.

From Science Daily • May 23, 2026

Beyond its enormous size, researchers believe Tylosaurus rex was built for strength and aggression.

From Science Daily • May 23, 2026

It lived between 100 and 120 million years ago - around 40 million years earlier than the tyrannosaurus rex - and is about twice the size of that creature.

From BBC • May 14, 2026

More butterflies took to the air as the largest fetterling I could’ve ever imagined tried to squeeze through a gap like a T. rex.

From "Tristan Strong Punches a Hole in the Sky" by Kwame Mbalia

Related Words

• czar
• emperor
• king
• monarch