Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
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noun
The study of the motion of rockets and spacecraft, usually from Newton's laws of motion, Newtonian gravity, and Kepler's laws
Definition source: English Wiktionary via Wiktextract
Usage: uncountable
No example sentence was provided for this meaning.
Synonyms: orbital mechanics
Antonyms: none provided
noun
the branch of astronomy that studies the motion of natural and artificial bodies in space
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
Broader terms: astronomy, uranology
History
Etymology tree Proto-Indo-European *h2eHs- Proto-Indo-European *-tḗr Proto-Indo-European *h2stḗr Proto-Hellenic *astḗr Ancient Greek ἀστήρ (astḗr) Ancient Greek ᾰ̓́στρον (ắstron)der. English astro- Proto-Indo-European *dewh2-der. Proto-Hellenic *dunamai Ancient Greek δῠ́νᾰμαι (dŭ́nămai) Ancient Greek δύναμις (dúnamis) Proto-Indo-European *-kos Proto-Hellenic *-kos Ancient Greek -κός (-kós) Ancient Greek -ικός (-ikós) Ancient Greek δυναμικός (dunamikós)lbor. French dynamiqueder. English dynamic Proto-Indo-European *-ikos Proto-Italic *-ikos Latin -icuslbor. Old French -iquebor. Middle English -ik English -ic Old English -as Middle English -es English -s English -ics English dynamics English astrodynamics From astro- + dynamics.
Across languages
3 source translations are retained for this English entry.
