First Known Use: 14th century
Dictionary
1diamond
noun, di·a·mond often attributive \ˈdī-(ə-)mənd\
: a very hard usually colorless stone that is a form of carbon and is used especially in jewelry
: 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
: a playing card that is marked with a red diamond shape
Full Definition of DIAMOND
1
a : 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 substance b : 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
4
a : a playing card marked with a stylized figure of a red diamond b plural but sing or plural in constr : the suit comprising cards marked with diamonds
5
: a baseball infield; also : the entire playing field
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Origin of DIAMOND
Middle English diamaunde, from Middle French diamand, from Late Latin diamant-, diamas, alteration of Latin adamant-, adamas hardest metal, diamond, from Greek
2diamond
verb
Definition of DIAMOND
transitive verb
: to adorn with or as if with diamonds
First Known Use of DIAMOND
1751
3diamond
adjective
: of or relating to the 60th or 75th anniversary of an important event (such as a marriage)
Full Definition of DIAMOND
: of, relating to, or being a 60th or 75th anniversary or its celebration <diamond jubilee>
See diamond defined for English-language learners
First Known Use of DIAMOND
1872
Diamond
biographical name Di·a·mond \ˈdī-(ə-)mənd\
Definition of DIAMOND
Peter A(rthur) 1940– Am. econ.
Diamond
geographical name Di·a·mond \ˈdī-(ə-)mənd\
Definition of DIAMOND
mountains SE North Korea; highest 5374 feet (1638 m)
Variants of DIAMOND
Di·a·mond or Kum·gang \ˈku̇m-ˌgäŋ\
DIAMONDS Defined for Kids
diamond
noun di·a·mond \ˈdī-ə-mənd, ˈdī-mənd\
Definition of DIAMOND for Kids
1
: a very hard mineral that is a form of carbon, is usually nearly colorless, and is used especially in jewelry
2
: a flat figure {loz} like one of the surfaces of certain cut diamonds
3
: infield 1
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