jet

¹ American  

[jet] / dʒɛt /

noun

1. a stream of a liquid, gas, or small solid particles forcefully shooting forth from a nozzle, orifice, etc.

2. something that issues in such a stream, as water or gas.

3. a spout or nozzle for emitting liquid or gas.

   a gas jet.

4. jet plane.

5. jet engine.

---

verb (used without object)

jetted, jetting

1. to travel by jet plane.

   to jet to Las Vegas for the weekend.

2. to move or travel by means of jet propulsion.

   The octopus jetted away from danger.

3. to be shot forth in a stream.

4. to move or travel rapidly.

   The star halfback jetted toward the goal line.

verb (used with object)

jetted, jetting

1. to transport by jet plane.

   The nonstop service from New York will jet you to Tokyo in 13 hours.

2. to shoot (something) forth in a stream; spout.

3. to place (a pile or the like) by eroding the ground beneath it with a jet of water or of water and compressed air.

adjective

1. of, relating to, or associated with a jet, jet engine, or jet plane.

   jet pilot; jet exhaust.

2. in the form of or producing a jet or jet propulsion.

   jet nozzle.

3. by means of a jet plane.

   a jet trip; jet transportation.

jet ² American  

[jet] / dʒɛt /

noun

1. a compact black coal, susceptible of a high polish, used for making beads, jewelry, buttons, etc.

2. a deep black.

3. Obsolete. black marble.

---

adjective

1. consisting or made of jet.

2. of the color jet; black as jet.

jet ¹ British  

/ dʒɛt /

noun

1. 1. a hard black variety of coal that takes a brilliant polish and is used for jewellery, ornaments, etc

   2. ( as modifier )

      jet earrings

---

jet ² British  

/ dʒɛt /

noun

1. a thin stream of liquid or gas forced out of a small aperture or nozzle

2. an outlet or nozzle for emitting such a stream

3. a jet-propelled aircraft

4. astronomy a long thin feature extending from an active galaxy and usually observed at radio wavelengths

---

verb

1. to issue or cause to issue in a jet

   water jetted from the hose

   he jetted them with water

2. to transport or be transported by jet aircraft

JET ³ British  

/ dʒɛt /

acronym

1. Joint European Torus; a tokamak plasma-containment device at Culham, Oxfordshire, for research into energy production by nuclear fusion

---

jet Scientific  

/ jĕt /

1. A rapid stream of liquid or gas forced through a small opening or nozzle under pressure.

2. An aircraft or other vehicle propelled by one or more jet engines.

3. A jet engine.

---

Etymology

Origin of jet¹

First recorded in 1660–70; 1940–45 jet ¹ for def. 4; from Middle French jeter “to throw,” from unrecorded Vulgar Latin jectāre, from Latin jactus, past participle of jacere “to throw”

Origin of jet²

First recorded in 1350–1400; Middle English jet(e), get(e), from Old French jaiet, gaiet, from Latin gagātēs, from Greek (líthos) gagā́tēs “Gagatic (stone),” named after Gágai, town in Lycia

Explanation

A jet is an airplane that can rapidly travel long distances. To jet is the act of getting somewhere quickly, by jet or any other way, as in, "Do you see what time it is? We better jet!" A jet is an aircraft that gets its power from jet engines rather than propellers. Jets are fast — that's probably why as a verb, jet means "to move quickly," either by taking a jet, like the celebrities who jet around the world, or the more ordinary "if I don't jet, I'll be late for school." Dishwashers and certain kinds of tubs have jets, tiny openings that push water out with great force. The streams of water are also called, you guessed it, jets.

Example Sentences

“Oil is the clearest example because short-run demand is relatively inelastic: transportation still needs gasoline and diesel, airlines still need jet fuel, and petrochemical plans still need feedstock,” she said in a note Thursday.

From MarketWatch • Apr. 24, 2026

As the war in Iran strangles the flow of oil around the globe, California’s jet fuel reservoirs are running low.

From Los Angeles Times • Apr. 24, 2026

That translated into a surge in jet fuel prices that proved to be "the straw that broke the camel's back," said Jan Brueckner, emeritus economics professor at the University of California, Irvine.

From Barron's • Apr. 24, 2026

In the best case, it could take six months for markets like jet fuel and petrochemicals to normalize.

From The Wall Street Journal • Apr. 24, 2026

The jet plane flew closer, closer, straight for the bald.

From "Two Degrees" by Alan Gratz

Related Words

• airplane
• plane