follow Dictionary.com

Dictionary.com's Word of the Year is...

diamond

[dahy-muh nd, dahy-uh-] /ˈdaɪ mənd, ˈdaɪ ə-/
noun
1.
a pure or nearly pure, extremely hard form of carbon, naturally crystallized in the isometric system.
2.
a piece of this stone.
3.
a transparent, flawless or almost flawless piece of this stone, especially when cut and polished, valued as a precious gem.
4.
a ring or other piece of jewelry containing such a precious stone, especially an engagement ring.
5.
a piece of this stone used in a drill or cutting tool.
6.
a tool provided with such an uncut stone, used for cutting glass.
7.
crystallized carbon, or a piece of it, artificially produced.
8.
an equilateral quadrilateral, especially as placed with its diagonals vertical and horizontal; a lozenge or rhombus.
9.
any rhombus-shaped figure or object oriented with its diagonals vertical and horizontal.
10.
a red rhombus-shaped figure on a playing card.
11.
a card of the suit bearing such figures.
12.
diamonds, (used with a singular or plural verb) the suit so marked:
Diamonds is trump. Diamonds are trump.
13.
Baseball.
  1. the space enclosed by home plate and the three bases; infield.
  2. the entire playing field.
14.
Printing. a 4½-point type of a size between brilliant and pearl.
adjective
15.
made of or set with a diamond or diamonds.
16.
having the shape of a diamond:
a dress with a diamond print.
17.
indicating the 75th, or sometimes the 60th, event of a series, as a wedding anniversary.
verb (used with object)
18.
to adorn with or as if with diamonds.
Idioms
19.
diamond in the rough, a person of fine character but lacking refined manners or graces.
Origin
1275-1325
1275-1325; Middle English diamant < Old French < Vulgar Latin *diamant-, stem of *diamas, perhaps alteration of *adimas (> French aimant magnet, Old Provençal aziman diamond, magnet), for Latin adamas adamant, diamond
Related forms
diamondlike, adjective

Diamond

[dahy-muh nd, dahy-uh-] /ˈdaɪ mənd, ˈdaɪ ə-/
noun
1.
Neil, born 1941, U.S. singer and songwriter.
2.
Cape, a hill in Canada, in S Quebec, on the St. Lawrence River.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples from the web for diamond
  • Knowing that he is dying, he tells him to take dia home and gives them the diamond.
  • Blood diamond was released to mildly positive reviews from both critics and audiences.
  • Blood diamond is the soundtrack to the movie of the same name.
  • Fifteen years later jared diamond was informed by papuans that the practice continued.
  • It had fueling tanks, a control tower, and a baseball diamond.
  • Alluvial diamond and gold mining activities also account for some economic activity.
  • He also laid the basis of crystallography by recognising the octahedral habit of diamond.
  • diamond tools, though for cutting, are often abrasive in nature.
  • diamond cutting, polishing, marketing, diamond jewellery manufacturing.
  • All of the above bicycle races involve diamond frame bicycles of two triangles.
British Dictionary definitions for diamond

diamond

/ˈdaɪəmənd/
noun
1.
  1. a colourless exceptionally hard mineral (but often tinted yellow, orange, blue, brown, or black by impurities), found in certain igneous rocks (esp the kimberlites of South Africa). It is used as a gemstone, as an abrasive, and on the working edges of cutting tools. Composition: carbon. Formula: C. Crystal structure: cubic
  2. (as modifier): a diamond ring, related adjective diamantine
2.
(geometry)
  1. a figure having four sides of equal length forming two acute angles and two obtuse angles; rhombus
  2. (modifier) rhombic
3.
  1. a red lozenge-shaped symbol on a playing card
  2. a card with one or more of these symbols or (when plural) the suit of cards so marked
4.
(baseball)
  1. the whole playing field
  2. the square formed by the four bases
5.
(formerly) a size of printer's type approximately equal to 41/2 point
6.
black diamond, a figurative name for coal
7.
rough diamond
  1. an unpolished diamond
  2. a person of fine character who lacks refinement and polish
verb
8.
(transitive) to decorate with or as with diamonds
Derived Forms
diamond-like, adjective
Word Origin
C13: from Old French diamant, from Medieval Latin diamas, modification of Latin adamas the hardest iron or steel, diamond; see adamant
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for diamond
n.

early 14c., from Old French diamant, from Medieval Latin diamantem (nominative diamas), from Vulgar Latin *adiamantem (altered by influence of the many Greek words in dia-), from Latin adamantem (nominative adamans) "the hardest metal," later, "diamond" (see adamant). Playing card suit is from 1590s; Sense in baseball is American English, 1875.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
diamond in Science
diamond
  (dī'ə-mənd)   
A form of pure carbon that occurs naturally as a clear, cubic crystal and is the hardest of all known minerals. It often occurs as octahedrons with rounded edges and curved surfaces. Diamond forms under conditions of extreme temperature and pressure and is most commonly found in volcanic breccias and in alluvial deposits. Poorly formed diamonds are used in abrasives and in industrial cutting tools.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
diamond in Technology


One of five pedagogical languages based on Markov algorithms, used in "Nonpareil, a Machine Level Machine Independent Language for the Study of Semantics", B. Higman, ULICS Intl Report No ICSI 170, U London (1968). (cf. Brilliant, Nonpareil, Pearl[3], Ruby[2]).

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
Cite This Source
diamond in the Bible

(1.) A precious gem (Heb. yahalom', in allusion to its hardness), otherwise unknown, the sixth, i.e., the third in the second row, in the breastplate of the high priest, with the name of Naphtali engraven on it (Ex. 28:18; 39:11; R.V. marg., "sardonyx.") (2.) A precious stone (Heb. shamir', a sharp point) mentioned in Jer. 17:1. From its hardness it was used for cutting and perforating other minerals. It is rendered "adamant" (q.v.) in Ezek. 3:9, Zech. 7:12. It is the hardest and most valuable of precious stones.

Easton's 1897 Bible Dictionary
Cite This Source

Word of the Day

Difficulty index for diamond

All English speakers likely know this word

Word Value for diamond

11
13
Scrabble Words With Friends

Quotes with diamond

Nearby words for diamond