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  1. Dictionary
    ruby
    /ˈruːbi/

    noun

    • 1. a precious stone consisting of corundum in colour varieties varying from deep crimson or purple to pale rose: "a necklace of rubies"
    • 2. an old type size equal to 51/2 points.

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    More definitions, origin and scrabble points

  2. dictionary.cambridge.org › dictionary › englishRUBY | English meaning - Cambridge Dictionary

    Ruby is a dark red precious stone or a colour. Learn how to use the word ruby in different contexts, such as jewellery, curry, or lipstick, with examples and translations.

  3. www.merriam-webster.com › dictionary › rubyRuby Definition & Meaning - Merriam-Webster

    Ruby is a noun that refers to a red corundum stone or its color, or an adjective that describes something dark red. Learn more about the word history, examples, synonyms, and related phrases of ruby.

  4. en.wikipedia.org › wiki › RubyRuby - Wikipedia

    Ruby is a pinkish red to blood-red colored gemstone, a variety of the mineral corundum ( aluminium oxide ). Ruby is one of the most popular traditional jewelry gems and is very durable. Other varieties of gem-quality corundum are called sapphires. Ruby is one of the traditional cardinal gems, alongside amethyst, sapphire, emerald, and diamond. [3]

  5. www.vocabulary.com › dictionary › rubyRuby - Definition, Meaning & Synonyms | Vocabulary.com

    A ruby is a gemstone that's usually a deep red. You can also describe things that are this same red color as ruby, like Dorothy's ruby slippers. Rubies are one of four types of precious stones — the others are diamonds, emeralds, and sapphires.

  6. www.thefreedictionary.com › rubyRuby - definition of ruby by The Free Dictionary

    Ruby is a deep red, transparent variety of the mineral corundum, used as a gemstone and in lasers. It can also refer to something made of or containing ruby, or a color similar to blood.

  7. www.dictionary.com › browse › rubyRUBY Definition & Meaning | Dictionary.com

    noun. a deep red transparent precious variety of corundum: occurs naturally in Myanmar and Sri Lanka but is also synthesized. It is used as a gemstone, in lasers, and for bearings and rollers in watchmaking. Formula: Al 2 O 3.

  8. www.collinsdictionary.com › dictionary › englishRUBY definition and meaning | Collins English Dictionary

    Ruby is a dark red jewel, a colour, or a name. Learn more about its origin, synonyms, pronunciation, and examples of usage in different contexts.