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Glossary of Aerospace Terms
beginning with letter A
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ablation Tweet Definition of ablation Like Definition of ablation on Facebook
  1. A carrying or taking away; removal.
  2. (medicine) The surgical removal of a body part; amputation.
  3. (geology) The erosion of a glacier.
  4. (physics) The dissipation of the heat of re-entry of a spacecraft, meteor, or similar object.
ablator Tweet Definition of ablator Like Definition of ablator on Facebook
  1. one who ablates
active Tweet Definition of active Like Definition of active on Facebook
  1. A person or thing that is acting or capable of acting.
adjective (WikiSaurus?-link, active)
  1. Having the power or quality of acting; causing change; communicating action or motion; acting; — opposed to passive, that receives; as, certain active principles; the powers of the mind.
  2. Quick in physical movement; of an agile and vigorous body; nimble; as, an active child or animal.
  3. In action; actually proceeding; working; in force; — opposed to quiescent, dormant, or extinct.
active laws
active hostilities
an active volcano
  1. Given to action; constantly engaged in action; energetic; diligent; busy; — opposed to dull, sluggish, indolent, or inert; as, an active man of business; active mind; active zeal.
  2. Requiring or implying action or exertion; — opposed to sedentary or to tranquil; as, active employment or service; active scenes.
  3. Given to action rather than contemplation; practical; operative; — opposed to speculative or theoretical; as, an active rather than a speculative statesman.
  4. Brisk; lively; as, an active demand for corn.
  5. Implying or producing rapid action.
an active disease
an active remedy
  1. (grammar)
  1. Applied to a form of the verb; — opposed to passive. See active voice.
  2. Applied to verbs which assert that the subject acts upon or affects something else; transitive.
  3. Applied to all verbs that express action as distinct from mere existence or state.
  4. (italbrac, gay sexual slang)
  5. (italbrac, of a homosexual man) enjoying a role in anal sex in which he penetrates, rather than being penetrated by his partner
  6. such a role in anal sex
aerospace Tweet Definition of aerospace Like Definition of aerospace on Facebook
  1. the atmosphere of the Earth and the region of space around it
  2. the industry concerned with aircraft, missiles, satellites and spacecraft
  1. of, or relating to the Earth's atmosphere and nearby space
  2. of, or relating to the science, technology and industry associated with aircraft, missiles, satellites and spacecraft
Apollo Tweet Definition of Apollo Like Definition of Apollo on Facebook
noun (eng-noun)
  1. (astronomy) An asteroid possessing an orbit that crosses the orbit of the Earth and an orbital period of over one year, with semimajor axis, semimajor axes greater than 1 AU, and perihelion distances less than 1.017 AU.
proper noun 
  1. (Greek, Roman mythology): The son of Zeus and Leto (or Jupiter and Latona), and the twin brother of Artemis (or Diana).<ref>Oxford Dictionary of World Mythology, Arthur Cotterell, Oxford University Press, 1986</ref> He was the god of light, music, medicine, and poetry;<ref name="Webster's c 2001">Webster's College Dictionary, Random House, 2001</ref> and prophecy, dance, manly beauty, and more.
  2. A very handsome young man.<ref name="Webster's c 2001"/>
  3. Space, U.S. A three-man spacecraft designed to travel to and land on the moon.
  4. A town in Pennsylvania, USA.
  5. A butterfly (Parnassius apollo, a large swallowtail with black and red spots on white wings).
Ariel Tweet Definition of Ariel Like Definition of Ariel on Facebook
proper noun 
  1. Biblical Hebrew name meaning literally "lion of God", and used also in reference to the city of Jerusalem.
  2. Name of a spirit in the play The Tempest by Shakespeare.
  3. Name of the twelfth and brightest moon of the planet Uranus.
  4. (given name, male), often borrowed from Spanish usage.
  5. (given name, female), mostly of persons born after 1970.
astronaut Tweet Definition of astronaut Like Definition of astronaut on Facebook
  1. A member of the crew of a spaceship or other spacecraft, or someone trained for that purpose
astronautical Tweet Definition of astronautical Like Definition of astronautical on Facebook
  1. referring to travel in outer space
astronautics Tweet Definition of astronautics Like Definition of astronautics on Facebook
  1. navigation, Navigation through space.

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