Megametre


Megametre
1 megametre =
SI units
1,000.00 km 1.000×10^6 m
Astronomical units
6.685×10^−6 AU 105.7×10^−12 ly
US customary / Imperial units
621.37 mi 3.281×10^6 ft

A megametre (American spelling: megameter, symbol Mm) is a unit of length in the metric system, equal to one million metres, the SI base unit of length, hence to 1,000 km or approximately 621.37 miles.

Megametres (from the Greek words megas = big and metro = count/measure) are rarely seen in practical use, e.g. "5000 km" is much more common than "5 Mm". Their symbol (Mm) can also be confused with millimetres (mm). Megametres are also occasionally found in science fiction.[citation needed]

See also

Reference


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Look at other dictionaries:

  • Mégamètre — Mètre Pour les articles homonymes, voir Mètre (homonymie) …   Wikipédia en Français

  • Megametre — Megameter Meg a*me ter, Megametre Meg a*me tre, n. [Mega + meter, metre, n., 2.] In the metric system, one million meters, or one thousand kilometers. [1913 Webster] …   The Collaborative International Dictionary of English

  • mégamètre — megametras statusas T sritis Standartizacija ir metrologija apibrėžtis Kartotinis ilgio matavimo vienetas, lygus milijonui metrų, t. y. 1 Mm = 10⁶ m. atitikmenys: angl. megameter vok. Megameter, n rus. мегаметр, m pranc. mégamètre, m …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • mégamètre — megametras statusas T sritis fizika atitikmenys: angl. megameter vok. Megameter, n rus. мегаметр, m pranc. mégamètre, m …   Fizikos terminų žodynas

  • megametre — noun A distance of 1,000 km. Symbol: Mm …   Wiktionary

  • mégamètre — (mé ga mè tr ) s. m. Terme d astronomie. Instrument propre à mesurer des distances angulaires de plusieurs degrés entre les astres. ÉTYMOLOGIE    Méga...., et mètre …   Dictionnaire de la Langue Française d'Émile Littré

  • megàmetre — me|gà|me|tre Mot Esdrúixol Nom masculí …   Diccionari Català-Català

  • 1 megametre — Small planets, the Moon and dwarf planets in our solar system have diameters from one to ten million metres. Top row: Mars (left), Mercury (right); bottom row: Moon (left), Pluto (center), and Haumea (right), to scale …   Wikipedia

  • 1 E+30 m³ — To help compare different orders of magnitudes this page lists volumes between one thousand cubic gigametre and ten thousand cubic terametre (10^{30} to 10^{40} cubic metres). See also volumes or capacities of other orders of magnitude.* Volumes… …   Wikipedia

  • 1 E+24 m³ — To help compare different orders of magnitudes this page lists volumes between one million cubic megametres and one one cubic gigametre (10^{24} to 10^{27} cubic metres). See also volumes or capacities of other orders of magnitude.* Volumes… …   Wikipedia


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