Phrase 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
A unit of length equal to the distance light travels in one second: about 300 megameters
Definition source: English Wiktionary via Wiktextract
Topics: astronomy, natural-sciences, physical-sciences, physics
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
the distance light travels in a vacuum in one second; approximately 300,000 kilometers
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
Broader terms: astronomy unit
History
No etymology was provided for this word.
