Definition of diamond
1a : native crystalline carbon that is the hardest known mineral, that is usually nearly colorless, that when transparent and free from flaws is highly valued as a precious stone, and that is used industrially especially as an abrasive; also : a piece of this substanceb : crystallized carbon produced artificially
2 : something that resembles a diamond (as in brilliance, value, or fine quality)
3 : a square or rhombus-shaped figure usually oriented with the long diagonal vertical
4a : a playing card marked with a stylized figure of a red diamondb diamonds plural in form but singular or plural in construction : the suit comprising cards marked with diamonds
5 : a baseball infield; also : the entire playing field
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Examples of diamond in a Sentence
a necklace studded with diamonds and rubies
The ruby was surrounded by a ring of diamond.
The children cut the fabric into diamonds.
one heart, two diamonds, and two clubs
He played the queen of diamonds.
Did You Know?
The largest uncut diamond ever found on earth was the 3,106-carat Cullinan diamond. It was mined in South Africa in 1905 and cut to form the 530-carat “Star of Africa,” which is now part of the British Crown Jewels. But that is nothing compared with the biggest in the known universe. In 2004 American astronomers discovered a diamond 2,500 miles (4,000 km) wide, weighing 10 billion trillion trillion carats, at the heart of a white dwarf star eight light years away in the constellation Centaurus. The star is unofficially known as Lucy, after the Beatles song “Lucy in the Sky with Diamonds.”
Origin and Etymology of diamond
Middle English diamaunde, from Middle French diamand, from Late Latin diamant-, diamas, alteration of Latin adamant-, adamas hardest metal, diamond, from Greek
diamond
Definition of diamond
transitive verb
: to adorn with or as if with diamonds
First Known Use of diamond
1751
diamond
Definition of diamond
: of, relating to, or being a 60th or 75th anniversary or its celebration diamond jubilee
Examples of diamond in a Sentence
the celebration of Queen Victoria's diamond jubilee in 1897
First Known Use of diamond
1872
Diamond
playDefinition of Diamond
Peter A(rthur) 1940– American economist
DIAMOND Defined for English Language Learners
diamond
playDefinition of diamond for English Language Learners
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: a very hard usually colorless stone that is a form of carbon and is used especially in jewelry
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: a shape that is formed by four equal straight lines and that has two opposite angles that are smaller than a right angle and two opposite angles that are larger than a right angle
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: a playing card that is marked with a red diamond shape
diamond
Definition of diamond for English Language Learners
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: of or relating to the 60th or 75th anniversary of an important event (such as a marriage)
DIAMOND Defined for Kids
Learn More about diamond
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Spanish Central: Translation of diamond Nglish: Translation of diamond for Spanish speakers Britannica English: Translation of diamond for Arabic speakers Britannica.com: Encyclopedia article about diamond
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