jupiter

plural jupiters · alternative Jupiter · alternative Jupiter-class planet · alternative jupiter-class planet · alternative Jupiter class planet · alternative jupiter class planet

1. A class of planets that are similar in mass to Jupiter.

   Synonyms: jovian, Jovian, Jovian planet, jovian planet, Jovian-class planet, jovian-class planet, Jovian class planet, jovian class planet

1. astronomyThe fifth and by far the largest planet in the Solar System, a gas giant, represented by the symbol ♃ in astronomy. Jupiter is known for its Great Red Spot and many moons including the Galilean moons.

   Jupiter condensed out of the dust and gas that became our solar system at a distance where water remains frozen.

   1990 August, Bradford A. Smith, “Voyage of the Century”, in National Geographic, volume 178, number 2, page 62

   2 more examples

   The arrival of the new prefixes means the Earth can now be said to weigh six ronnagrams, and Jupiter about two quettagrams.

   2022 November 18, Ian Sample, “Earth weighs in at six ronnagrams as new prefixes picked for big and small”, in The Guardian, archived from the original on 26 Mar 2023

   Ancient peoples, without telescopes, would have no knowledge that Jupiter is the largest and most majestic planet—it would only be a point of light in the sky. How then did this planet come to be named for the mythological ruler of the gods?[…] The fact that the planet Jupiter, named for the ruling Roman god, is the most massive planet is simply a coincidence.

   2025, Neil deGrasse Tyson, “Planets, Moons, and Cosmic Debris”, in Just Visiting This Planet, Revised and Updated for the Twenty-First Century (Science / Astronomy), Blackstone Publishing, →ISBN, →OCLC, pages 34, 35

2. Romanhuman sciencesThe King of the Gods, also called Jove. Equivalent to the Greek Zeus, Jupiter was one of the children of Saturn. As supreme god of the Roman pantheon, Jupiter was the god of thunder, lightning, and storms, and appropriately called the god of light and sky.
3. informalThe largest or most prominent member of a group.

   Brazil could be considered the Jupiter of South America.

   1 more example

   Jupiter became the nickname of John Pierpont Morgan in late 19th century finance.

4. A number of places in the United States:
   1. An unincorporated community in Tuolumne County, California, named after a mine.
   2. A town in Palm Beach County, Florida, named in error after the Roman god.

      But there’s also a burgeoning food scene in downtown Palm Beach that’s drawing Floridians from Jupiter to Boca.

      2017 March 1, Hannah Seligson, “Where to get hip in Palm Beach”, in CNN, archived from the original on 12 Aug 2025

   3. A township in Kittson County, Minnesota, named after the planet.
   4. An unincorporated community in Buncombe County, North Carolina.
5. A summer resort on the Black Sea in Romania.
6. rareA unisex given name.

   Then, in March 2023, he [Ed Sheeran] spoke more at length about his wife's diagnosis with Rolling Stone, sharing that doctors had found the tumor when his wife was six months pregnant and that the couple considered having their daughter, who is named Jupiter, early.

   2022 August 5, Gretty Garcia, “Everything We Know About Cherry Seaborn aka Ed Sheeran's Ultra-Cool Wife”, in Cosmopolitan

1. rareuncountablegovernmentAzure (blue), in the postmedieval practice of blazoning the tinctures of certain sovereigns' (especially British monarchs') coats as planets.

   5. Jupiter, a Mace of Majestry in Bend Sol.

   1693, Richard Blome, The Art of Heraldry, in two parts ... second edition ..., pages 76-77

   3 more examples

   George [...] 2d. Jupiter, three Fleurs de Lis Sol, for the Arms of France. 3d. Jupiter, an Irish Harp Sol, stringed Luna, for Ireland.

   1718, Samuel Kent, The Grammar of Heraldry … Second Edition

   8. Tierce in Mantle, first Mars, two Lions passant-guardant in pale, Sol, for Brunswick; 2d Sol, Semi of Hearts proper, a Lion rampant Jupiter, for Lunenburgh; 3d, ente en Point, Mars, an Horse currant Luna, for Saxony. Note, these Ensigns (which are the paternal Coat of his Majesty King George) I have added as an Example, to shew the Form of what foreign Heralds term Tierce in Mantle, ente en Pointe, &c. […]

   1735, Francis Nichols, The Irish Compendium … vol. III of the British Compendium, second edition, page 80

   ARMS. QUARTERLY, in the first grand Quarter Mars, three Lions passant-guardant in Pale, Sol; the Imperial Ensigns of England, impaled with the Royal Arms of Scotland, which are Sol, a Lion rampant within a double Tressure flower'd and counterflower'd with Fleurs-de-lis, Mars. The second Quarter is the Royal Arms of France, viz. Jupiter, three Fleurs-de-lis, Sol. The third, the Ensign of Ireland, which is, Jupiter, an Harp Sol, stringed Luna.

   1737, Benjamin Martin, Bibliotheca Technologica: Or, a Philological Library, page 631

2. alternativeespeciallyuncountableastronomyAlternative spelling of jupiter.
3. obsoleteuncountablealchemyTin.

1. Synonym of by Jupiter.

   "Jupiter!" murmured Crediton. It is unusual for the senior hand to leave even one of the five cards to which he is entitled. It indicated an unusually strong hand.

   1923, Ernest Bramah [pseudonym; Ernest Brammah Smith], “(please specify the page)”, in The Eyes of Max Carrados, London: Grant Richards, →OCLC

   Synonyms: by Jupiter