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  • trident
    trident
    noun
    a three-pronged instrument or weapon.
  • Trident
    Trident
    noun
    a type of US submarine-launched ballistic missile with independently targetable warheads
Synonyms

trident

American  
[trahyd-nt] / ˈtraɪd nt /

noun

tridents plural
  1. a three-pronged instrument or weapon.

  2. Roman History. a three-pronged spear used by a retiarius in gladiatorial combats.

  3. Classical Mythology. the three-pronged spear forming a characteristic attribute of the sea god Poseidon, or Neptune.

  4. a fish spear having three prongs.

  5. Military. Trident, a 34-foot (10-meter) submarine-launched U.S. ballistic missile with eight to ten warheads and a range of 6,500 miles (10,459 km).


adjective

  1. Also tridental having three prongs or tines.

trident 1 British  
/ ˈtraɪdənt /

noun

  1. a three-pronged spear, originally from the East

  2. (in Greek and Roman mythology) the three-pronged spear that the sea god Poseidon (Neptune) is represented as carrying

  3. a three-pronged instrument, weapon, or symbol

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adjective

  1. having three prongs

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Trident 2 British  
/ ˈtraɪdənt /

noun

  1. a type of US submarine-launched ballistic missile with independently targetable warheads

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

Etymology

Origin of trident

First recorded in 1580–90; from Latin trident- (stem of tridēns ) “having three teeth”; see tri-, dent 2

Explanation

If you’re the ancient Greek god of the sea, you’re probably already familiar with a trident, a three-pronged spear you can use to stab things. The trident, which is a spear with three points, or prongs, is often associated with the Greek god Poseidon, who used his trident to cause earthquakes and create sources of water. Mere mortals, however, are more likely to use a trident for spear fishing, or long ago, for military combat. Remember not to confuse a trident with a pitchfork, which is used mainly for lifting and tossing things.

Keep Reading on Vocabulary.com

Vocabulary lists containing trident

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.

See Examples For:

The Kings’ success will rest in how well Los Angeles adapts to Laviolette’s coaching trident.

From Los Angeles Times Jun. 10, 2026

Some fought with only a trident; some fought mounted on horseback; some on chariot; others on foot with helmet and short sword; some with two daggers; still others exclusively fought wild beasts.

From The Wall Street Journal Apr. 3, 2026

The design will feature three masts described as "the trident", which the architects say will be 200 metres high and visible from 25 miles away.

From BBC Mar. 11, 2025

He notes that the merfolk Laios wants to eat holds a trident as a weapon, making the conclusion that merfolk are smart enough to use tools.

From Salon Apr. 28, 2024

Jason charged to help him, but the giant blocked him with his huge trident.

From "Blood of Olympus" by Rick Riordan

Deterra has a royalty over the Thacker Pass lithium project in Nevada following its 2024 acquisition of Trident Royalties.

From The Wall Street Journal Apr. 9, 2026

Those include the UK's four Vanguard-class ballistic missile submarines which carry Trident nuclear missiles.

From BBC Mar. 23, 2026

The UK has operated continuous at-sea deterrence since 1969, with first Polaris and then Trident missiles stored on and launched from nuclear-powered submarines with the capacity to remain submerged at sea for months.

From BBC Mar. 21, 2026

In September, the United States carried out tests of its nuclear-capable Trident missiles.

From Barron's Oct. 30, 2025

"You avenged Lyanna at the Trident," Ned said, halting beside the king.

From "A Game of Thrones" by George R.R. Martin

One group of ash-smeared holy men, some naked and some dressed in just a loin cloth or marigold garland draped around their necks, marched through the streets, holding tridents, swords and small two-headed drums.

From BBC Jan. 13, 2025

On the inside collar of the jersey is the slogan “Sodo Mojo” with two upward point tridents, which is a nod to where the Mariners have played in the Sodo District.

From Seattle Times Apr. 28, 2023

Fair enough, until I look around the restaurant and notice how many visual distractions there are, including all shapes and sizes of tridents.

From Washington Post Feb. 17, 2023

The scientists measured various Walliserops specimens’ tridents and compared them with those of living rhinoceros beetles, which have elaborate headgear that males use to battle one another.

From New York Times Jan. 16, 2023

Lord Manderly’s household guard wore cloaks of blue-green wool and carried silver tridents in place of common spears.

From "A Dance with Dragons" by George R. R. Martin

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