What is "trojan"

Trojan \Tro"jan\, a. [L. Trojanus, fr. Troja, Troia, Troy, from Tros, Gr. Trw`s, Trwo`s, Tros, the mythical founder of Troy.]

1. Of or pertaining to ancient Troy or its inhabitants. -- n. A native or inhabitant of Troy.

2. One who shows the pluck, endurance, determined energy, strength, or the like, attributed to the defenders of Troy; -- used chiefly or only in the phrase

   like a Trojan; as, he endured the pain like a Trojan; he studies like a Trojan.

   Tim jumped like a Trojan from the bed.
   --Finnegan's Wake (Irish song)

Old English Troian "of or pertaining to ancient Troy," from Latin Trojanus, from Troia, Troja "Troy," from the Greek name for the city, said to be from Tros, name of a king of Phrygia, the mythical founder of Troy. Trojan horse was figurative of ambush-from-within in Roman times (equus Troianus); attested in English from 1570s; the computer virus sense is attested by 1982.\n

\nAs a noun from mid-14c., "inhabitant of ancient Troy;" in early modern English, the noun could mean "a determined fellow, one who fights or works hard," from the Trojans' long resistance to the Greeks in the Trojan War, but also in 17c., it was a colloquial term for "person of dissolute life, carousing companion." The trade name for a brand of prophylactic contraceptive was registered 1927 in U.S.

a. (context astronomy English) Describing a satellite (moon or minor planet) that shares an orbit with another n. (context computing English) malware that appears to perform or actually performs a desired task for a user while performing a harmful task without the user's knowledge or consent.

Trojan or Trojans may refer to:

• A person from the ancient city of Troy
• Trojan language, the language Trojans spoke at the time of the Trojan War
• Trojan (astronomy), a minor planet or moon that shares an orbit with a larger planet or moon
• Trojan (surname)
• A number of sports teams named Trojans

Trojan is a brand name of condoms and sexual lubricants manufactured by the Church & Dwight Company. As of 2006, 69 percent of condoms purchased in United States drugstores are Trojan brand. Trojan condoms were the idea of an enterprising Presbyterian from upstate New York named Merle Leland Youngs. When Youngs moved to New York City in the 1910s, the major condom manufacturer was Julius Schmid, who made Ramses and other reliable brands as early as the 1880s. Other elements of the condom trade were run by seedy, fly-by-night manufacturers selling cheap wares.

Due to the Comstock Law of 1873 and many similar state laws, condoms were until 1957 sold as protection against disease. Still, many pharmacists were loath to stock a product associated with sexual vice. For that reason, consumers often had to purchase their condoms in the backrooms of bars.

Trojan was a British automobile manufacturer producing light cars between 1914 and 1965, and light commercial vehicles for a short time.

is a side-scrolling action game produced by Capcom originally released as a coin operated video game in . The arcade version was distributed in North America by Romstar and is included in Capcom Classics Collection Vol. 1 for PlayStation 2 and Xbox.

Home versions for DOS and the Nintendo Entertainment System were released during the same year. A ZX Spectrum version was programmed by Clive Townsend for Elite Systems in 1987 for their Durell publishing line of games, but was never released; a ROM has since been leaked from a collection of Townsend's ZX Microdrive disk files.

In astronomy, a trojan is a minor planet or moon that shares the orbit of a planet or larger moon, wherein the trojan remains in the same, stable position relative to the larger object. In particular, a trojan remains near one of the two trojan points of stability – designated and – which lie approximately 60° ahead of and behind the larger body, respectively. Trojan points make up two of five types of Lagrangian points, and a trojan is a type of Lagrangian object.

They are one type of co-orbital object. In this arrangement, the massive star and the smaller planet orbit about their common barycenter. A much smaller mass located at one of the Lagrangian points is subject to a combined gravitational force that acts through this barycenter. Hence the object can orbit around the barycenter with the same orbital period as the planet, and the arrangement can remain stable over time.

The Jupiter trojans account for most known trojans in the Solar System. They are divided into the Greek camp in front of and the Trojan camp trailing behind Jupiter in their orbit. More than 6,000 have been found so far and more than a million Jupiter trojans larger than one kilometer are thought to exist, whereas only a few Mars trojans (7) and Neptune trojans (13) have been found to date. Numerical calculations of the orbital dynamics involved indicate that Saturn and Uranus probably do not have any primordial trojans. The discovery of the first Earth trojan, , was announced by NASA in 2011.

Unlike trojan minor planets that share the orbit with a planet, a trojan moon is a moon orbiting near the trojan point of another, larger moon. All known trojan moons are part of the Saturn system. Telesto and Calypso are trojans of Tethys, and Helene and Polydeuces of Dione. There is also a theoretical concept of a trojan planet, a planet that orbits at the trojan point of another, larger planet. Such a pair of co-orbital exoplanets was already thought to exist in another star system, but this claim was later retracted.

Maja Trojan or Trojan ( or Trojan, Serbian/ Montenegrin: Trojan) is a mountain in the Prokletije range on the border of Albania and Montenegro. Situated 7 km west of the village Gusinje, its elevation is . From the summit of Trojan there is a wonderful panoramic view of the Prokletije and other ranges in the Dinaric Alps such as Visitor.

"Trojan" is the first episode of science fiction sitcom Red Dwarf series X. Originally broadcast on the British television channel Dave on 4 October 2012, it marked the return of Red Dwarf to a regular series run, 13 years after the conclusion of series 8. The episode touches upon Rimmer's relationship with his brothers and his urge to become an officer, following the discovery of a hologram of his brother Howard.

The surname Trojan may refer to:

• Alexander Trojan (1914-1992), Austrian film actor
• Ivan Trojan (born 1964), Czech actor
• Filip Trojan (born 1983) Czech footballer
• Kurt von Trojan (1937-2006), Australian journalist and science fiction writer
• Ondřej Trojan (born 1959), Czech film producer, actor and film director
• Václav Trojan (1907–1983), Czech composer