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trajectory

[truh-jek-tuh-ree]
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noun, plural tra·jec·to·ries.
  1. the curve described by a projectile, rocket, or the like in its flight.
  2. Geometry. a curve or surface that cuts all the curves or surfaces of a given system at a constant angle.
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Origin of trajectory

1660–70; < New Latin trājectōria, noun use of feminine of Medieval Latin trājectōrius cast-ing over. See traject, -tory1
Related formstra·jec·tile [truh-jek-til, -tahyl] /trəˈdʒɛk tɪl, -taɪl/, adjectivetra·jec·tion [truh-jek-shuh n] /trəˈdʒɛk ʃən/, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words

ammunitionbombbulletrocketprojectileballshotcartridgeslugpelletroundbatdartstealthboltarrowbirdMXcaplead

British Dictionary definitions for trajectile

trajectory

noun plural -ries
  1. the path described by an object moving in air or space under the influence of such forces as thrust, wind resistance, and gravity, esp the curved path of a projectile
  2. geometry a curve that cuts a family of curves or surfaces at a constant angle
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Derived Formstrajectile (trəˈdʒɛktaɪl), adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for trajectile

trajectory

n.

1690s, from Modern Latin trajectoria, from fem. of trajectorius "of or pertaining to throwing across," from Latin traiectus "thrown over or across," past participle of traicere "throw across," from Latin trans- "across" (see trans-) + icere, combining form of iacere "to throw" (see jet (v.)). Used in Late Latin and Middle English to mean "a funnel."

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Online Etymology Dictionary, © 2010 Douglas Harper

trajectile in Science

trajectory

[trə-jĕktə-rē]
  1. Physics The line or curve described by an object moving through space.
  2. Mathematics A curve or surface that passes through a given set of points or intersects a given series of curves or surfaces at a constant angle.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.