Jupiter

noun

Ju·​pi·​ter ˈjü-pə-tər 

1

: the chief Roman god, husband of Juno, and god of light, of the sky and weather, and of the state and its welfare and its laws compare zeus

2

: the largest of the planets and fifth in order from the sun see Planets Table

Examples of Jupiter in a Sentence

Recent Examples on the Web

An interstellar object – a comet from a distant star system – is passing through the space between Jupiter and Mars, and according to a recent study, Comet 3I/Atlas may be 3 billion years older than our Solar System. —Kiona N. Smith, Forbes.com, 11 July 2025

From Key West to Belle Glade and Jupiter, roadways were blocked by felled trees and littered with tree limbs, roof tiles and other debris. —Miami Herald, 11 July 2025

The New Horizons mission — which famously flew by Pluto in 2015 and is now studying the outer solar system — would also be cancelled, along with Juno, the probe that has been orbiting Jupiter since 2016. —Martha McHardy, MSNBC Newsweek, 10 July 2025

Finally, with seductive Venus entering Cancer on July 30, the love planet will join lucky Jupiter in your fifth house of love, turning up the romance while evoking a desire for loving, playful connections. —Valerie Mesa, People.com, 10 July 2025

Word History

Etymology

Latin

First Known Use

13th century, in the meaning defined at sense 1

Kids Definition

Jupiter

noun

Ju·​pi·​ter ˈjü-pət-ər 

: the largest of the planets and fifth in order of distance from the sun see planet

Geographical Definition

Jupiter

geographical name

Ju·​pi·​ter ˈjü-pə-tər 

town on the Atlantic in southeastern Florida population 55,156