- the ancient Roman god of war and agriculture, identified with the Greek god Ares.
- Astronomy. the planet fourth in order from the sun, having a diameter of 4222 miles (6794 km), a mean distance from the sun of 141.6 million miles (227.9 million km), a period of revolution of 686.95 days, and two moons.
- (often lowercase) of or relating to any of various pigments used in painting that are artificially made from an iron oxide base: Mars color; Mars pigments.
- to damage or spoil to a certain extent; render less perfect, attractive, useful, etc.; impair or spoil: That billboard mars the view. The holiday was marred by bad weather.
- to disfigure, deface, or scar: The scratch marred the table.
Origin of mar
SynonymsSee more synonyms for mar on Thesaurus.com
- (used chiefly in representation of southern black speech) master.
Origin of marse
Examples from the Web for mars
Methane could be produced by microbes on Mars, too, if they exist in enough numbers.
However, their presence shows that Mars could have a more complex and evolving chemical story.
There is an expanded place-name index with more than 150,000 entries, and separate undersea, Moon, and Mars features.The Best Coffee Table Books of 2014
December 13, 2014
Orion represents the first step towards human exploration of other planets, like Mars.NASA Launches Orion in Fiery Spectacle
Jack Holmes, The Daily Beast Video
December 5, 2014
What would it take to carry people to the Moon, or Mars, or an asteroid?To Infinity and Beyond! NASA’s Orion Mission Blasts Off
Matthew R. Francis
December 4, 2014
It is only in poetry that Cupid is more powerful than either Mammon or Mars.
Think of our world as it looks from the rocket that is heading toward Mars.
Well, hit do look sorter so, but I wouldn't 'a' b'lieved it, Mars Tom.
Mars Tom, he could a got de cow fer fifteen, en I tole him so.
And on that rug was a fine representation of Mars, the god of war.The Boy Life of Napoleon
- the Roman god of war, the father of Romulus and RemusGreek counterpart: Ares
- Also called: the Red Planet the fourth planet from the sun, having a reddish-orange surface with numerous dark patches and two white polar caps. It has a thin atmosphere, mainly carbon dioxide, and low surface temperatures. Spacecraft encounters have revealed a history of volcanic activity and running surface water. The planet has two tiny satellites, Phobos and Deimos. Mean distance from sun: 228 million km; period of revolution around sun: 686.98 days; period of axial rotation: 24.6225 hours; diameter and mass: 53.2 and 10.7 per cent that of earth respectively
- the alchemical name for iron
- (tr) to cause harm to; spoil or impair
- a disfiguring mark; blemish
Word Origin and History for mars
Roman god of war, also the name of the bright red planet, late 14c., from Latin Mars (stem *Mawort-), the Roman god of war, of unknown origin, apparently from earlier Mavors, related to Oscan Mamers. According to Watkins the Latin word is from *Mawort- "name of an Italic deity who became the god of war at Rome ...." He also had agricultural attributes, and might ultimately have been a Spring-Dionysus. The planet was so named by the Romans, no doubt for its blood-like color. The Greeks also called the planet Pyroeis "the fiery."
Old English merran (Anglian), mierran (West Saxon) "to waste, spoil," from Proto-Germanic *marzjan (cf. Old Frisian meria, Old High German marren "to hinder, obstruct," Gothic marzjan "to hinder, offend"), from PIE root *mers- "to trouble, confuse" (cf. Sanskrit mrsyate "forgets, neglects," Lithuanian mirszati "to forget"). Related: Marred; marring.
- The fourth planet from the Sun and the second smallest in the solar system, with a diameter about half that of Earth. Mars is the last of the terrestrial or inner planets and has notable similarities to Earth, including polar ice caps and a tilted axis that gives it seasons. However, it is significantly less dense than Earth and has no magnetic field, suggesting that it lacks a metallic core, and its atmosphere, made up mostly of carbon dioxide, is much thinner than Earth's. Mars has no surface water apart from a layer of permanent ice that underlies the seasonally changing caps of frozen carbon dioxide at its poles; there is, however, clear evidence of earlier water flows in the form of channels, outwashes, and canyons. Other surface features include numerous craters, especially in the southern hemisphere, along with very large volcanoes and extensive windblown dunes. Mar's reddish color is due to the abundance of hematite in its surface rocks. Its two small, irregular moons, Phobos and Deimos, may be asteroids captured earlier by gravitational attraction. See Table at solar system.
The Roman name of Ares, the Greek and Roman god of war.