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.
Sound
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noun
The study of the origin of the planets in the solar system.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
From Ancient Greek ἔτης (étēs, “clansman”), from Proto-Indo-European *swé (“self”), plus -gony. See also ἑταῖρος (hetaîros, “companion”). Probably invented by Hannes Alfvén.https://web.archive.org/web/20170401121945/http://worldwidewords.org/nl/lumr.htm
