different between trajectory vs transearth

English

Etymology

From New Latin tr?iect?rium, from tr?iect?rius (“of or pertaining to throwing across”), from Latin tr?iectus (“thrown over or across”), past participle of tr?ici?, from trans- (“across, beyond”) (see trans-) + iaci? (“to throw”) (from Proto-Indo-European *(H)yeh?- (“to throw, impel”)). Middle French and Middle English had trajectorie (“end of a funnel”), from Latin tr?iect?rium.

Pronunciation

• IPA^(key): /t???d??kt???/

Noun

trajectory (plural trajectories)

1. The path an object takes as it moves.
   • 2019, Louise Taylor, Alex Morgan heads USA past England into Women’s World Cup final (in The Guardian, 2 July 2019)[1]

     The USA were dominant but, to England’s immense credit, they repeatedly rallied, refusing to fold. Indeed they could conceivably have gone in level at the interval had Naeher not made an acrobatic, stretching, fingertip save to divert Walsh’s 25-yard thunderbolt as it whizzed unerringly on its apparently inexorable trajectory towards the top corner.

2. (astronomy, space science) The path of a body as it travels through space.
3. (cybernetics) The ordered set of intermediate states assumed by a dynamical system as a result of time evolution.
4. (figuratively) A course of development, such as that of a war or career.

Derived terms

• (astronomy, space): flyby trajectory

Related terms

• (cybernetics): run

Translations

English

Etymology 1

From trans- +? earth.

Adjective

transearth (not comparable)

1. (of a spaceflight or trajectory) Towards the earth from the moon or another planet.

   After the Apollo 13 accident, the transearth injection burn shortened the return time by about 9 hours.

Etymology 2

From trans- +? earth.

Verb

transearth (third-person singular simple present transearths, present participle transearthing, simple past and past participle transearthed)

1. (transitive, archaic) To transplant
   • 1904, Owen Felltham, William Henry Oliphant Smeaton, Resolves:

     As fruits of hotter countries, transearthed in colder climates, have vigour enough in themselves to be fructuous according to their nature: but, that they are hindered by the chilling nips of the air, and the soil, wherein they are planted.

See also

• translunar
• cislunar