MACHO
MACHO MACHO (m[aum]"k[-o]), n. [acronym from Massive Astrophysical Compact Halo Object.] A form of dark matter in distant outer space unobservable except by its gravitational effect, and believed to be at least part of the ``missing matter'' which is unobservable as ordinary stars, but helps keep galaxies from flying apart; MACHOS are massive but compact objects such as neutron stars or brown dwarfs, which can be detected (with difficulty) by their effect in bending light from distant light sources, such as other galaxies. This can occur if by rare chance a MACHO passes in front of a more distant visible object, and the light from that object becomes temporarily amplified by the MACHO acting as a gravitational lens. Some MACHOs have been discovered in the halo of dark matter that surrounds our milky way. It is, however, questionable whether the amount of such matter is sufficient to explain the ability of galaxies to stay together in spite of rotation rates that would cause them to fly apart if the only matter present was that observable as visible stars. [PJC]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • macho — macho …   Dictionnaire des rimes

  • macho — [ matʃo ] n. m. • 1971; hispano amér. v. 1942; de l esp. macho, lat. masculus « mâle » ♦ Fam. Homme qui fait preuve de machisme. ⇒ machiste, phallocrate. Ton frère est un affreux macho. Des machos. Adj. Une attitude macho (⇒ sexiste) . ● macho ou …   Encyclopédie Universelle

  • Macho — (sprich: [ˈmatʃo]) ist ein spanisches Lehnwort, mit dem in der deutschen Umgangssprache ein Mann bezeichnet wird, welcher sich stark an den traditionellen Bildern der männlichen Geschlechterrolle orientiert. Im Sinne dieses Verständnisses von… …   Deutsch Wikipedia

  • Macho — Sm Mann, der sich Frauen überlegen fühlt per. Wortschatz grupp. (20. Jh.) Entlehnung. Entlehnt aus am. e. macho. Dies greift auf einen spanisch lateinamerikanischen Ausdruck machismo Männlichkeit zurück, der von den Frauenbewegungen als Haltung… …   Etymologisches Wörterbuch der deutschen sprache

  • macho — macho, cha adjetivo 1. Uso/registro: coloquial. Origen: Colombia, Venezuela. [Cosa] que es muy grande. 2. Uso/registro: coloquial …   Diccionario Salamanca de la Lengua Española

  • Macho — can refer to: *The property of being overtly masculine, hence the Spanish word Machismo *Massive compact halo object (MACHO), a general name for any kind of astronomical body that might explain the apparent presence of dark matter in galaxy halos …   Wikipedia

  • macho — MÁCHO adj. inv., s.m. (Adept) al machismului2. [pr.: má čo] (din sp. macho < lat. mascŭlus) [et. şi DRAE] Trimis de tavi, 13.09.2007. Sursa: MDN  MACHO [MÁCIO] adj., s. m. (adept) al machismului1.. (< …   Dicționar Român

  • macho — / matʃo/ s.m., sp. [lat. mascŭlus, propr. maschio ] (pl. machos o invar.), usato in ital. come s.m. e agg. ■ s.m. [uomo che tende a esibire una virilità esagerata e appariscente e che sostiene la superiorità del maschio sulla femmina: un vero… …   Enciclopedia Italiana

  • macho — 1928 (n.) tough guy, from Sp. macho male animal, noun use of adjective meaning masculine, virile, from L. masculus (see MASCULINE (Cf. masculine)). As an adjective, first attested in English 1959 …   Etymology dictionary

  • Macho — Macho: Der ugs. Ausdruck für den sich betont männlich gebenden Mann kam in den 80er Jahren des 20. Jh.s zu »Machismo« auf. Das Substantiv Machismo »übersteigertes Männlichkeitsgefühl (besonders in Lateinamerika)« wurde in den 70er Jahren aus… …   Das Herkunftswörterbuch

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”