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, esp. when cut and polished, valued as a precious gem.
4.
a ring or other piece of jewelry containing such a precious stone, esp. 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, esp. 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.
a.
the space enclosed by home plate and the three bases; infield.
b.
the entire playing field.
14.
Printing. a 41/2-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.
—Idiom
19.
diamond in the rough, a person of fine character but lacking refined manners or graces.
[Origin: 1275–1325; ME diamant < OF < VL *diamant-, s. of *diamas, perh. alter. of *adimas (> F aimant magnet, OPr aziman diamond, magnet), for L adamasadamant, diamond]
An extremely hard, highly refractive crystalline form of carbon that is usually colorless and is used as a gemstone and in abrasives, cutting tools, and other applications.
A piece of jewelry containing such a gemstone.
A figure with four equal sides forming two inner obtuse angles and two inner acute angles; a rhombus or lozenge.
Games
A red, lozenge-shaped figure on certain playing cards.
A playing card with this figure.
diamonds(used with a sing. or pl. verb) The suit of cards represented by this figure.
An infield.
The whole playing field.
Baseball
An infield.
The whole playing field.
adj.
Of or relating to a 60th or 75th anniversary.
tr.v.
di·a·mond·ed, di·a·mond·ing, di·a·monds
To adorn with or as if with diamonds.
[Middle English diamaunt, from Old French diamant, from Medieval Latin diamās-, diamant-, alteration of Latin adamās; see adamant.]
c.1310, from O.Fr. diamant, from M.L. diamantem (nom. diamas), from V.L. *adiamantem (altered by infl. of the many Gk. words in dia-), from L. adamantem (nom. adamans) "the hardest metal," later, "diamond" (see adamant). Playing card suit is from 1594; Sense in baseball is Amer.Eng. 1875.
diamondAudio Help (dī'ə-mənd) Pronunciation Key
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.
Diamond 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]).
Diamond Bar, CA (city, FIPS 19192) Location: 33.99940 N, 117.81428 W Population (1990): 53672 (17664 housing units) Area: 39.1 sq km (land), 0.0 sq km (water) Zip code(s): 91765, 91789
Diamond Point, NY Zip code(s): 12824
Diamond Lake, OR Zip code(s): 97731
Diamond Springs, CA (CDP, FIPS 19220) Location: 38.68596 N, 120.82156 W Population (1990): 2872 (1126 housing units) Area: 8.6 sq km (land), 0.0 sq km (water) Zip code(s): 95619
Diamond City, AR (city, FIPS 18850) Location: 36.45580 N, 92.91510 W Population (1990): 601 (418 housing units) Area: 3.7 sq km (land), 0.0 sq km (water)
Diamond, OH Zip code(s): 44412
Diamond, MO (town, FIPS 19432) Location: 36.99548 N, 94.31507 W Population (1990): 775 (309 housing units) Area: 1.5 sq km (land), 0.0 sq km (water) Zip code(s): 64840
Diamond, WV Zip code(s): 25015
Diamond, IL (village, FIPS 19837) Location: 41.28867 N, 88.25520 W Population (1990): 1077 (414 housing units) Area: 1.4 sq km (land), 0.0 sq km (water)
Blue Diamond, KY Zip code(s): 41719
Black Diamond, WA (city, FIPS 6330) Location: 47.31170 N, 122.00990 W Population (1990): 1422 (579 housing units) Area: 8.4 sq km (land), 0.2 sq km (water) Zip code(s): 98010
Ad"a*mant\ ([a^]d"[.a]*m[a^]nt), n. [OE. adamaunt, adamant, diamond, magnet, OF. adamant, L. adamas, adamantis, the hardest metal, fr. Gr. 'ada`mas, -antos; 'a priv. + dama^,n to tame, subdue. In OE., from confusion with L. adamare to love, be attached to, the word meant also magnet, as in OF. and LL. See Diamond, Tame.]1. A stone imagined by some to be of impenetrable hardness; a name given to the diamond and other substances of extreme hardness; but in modern mineralogy it has no technical signification. It is now a rhetorical or poetical name for the embodiment of impenetrable hardness. Opposed the rocky orb Of tenfold adamant, his ample shield. --Milton. 2. Lodestone; magnet. [Obs.] "A great adamant of acquaintance." --Bacon. As true to thee as steel to adamant. --Greene.
Car"bon\ (k[aum]r"b[o^]n), n. [F. carbone, fr. L. carbo coal; cf. Skr. [,c]r[=a] to cook.] (Chem.) An elementary substance, not metallic in its nature, which is present in all organic compounds. Atomic weight 11.97. Symbol C. it is combustible, and forms the base of lampblack and charcoal, and enters largely into mineral coals. In its pure crystallized state it constitutes the diamond, the hardest of known substances, occuring in monometric crystals like the octahedron, etc. Another modification is graphite, or blacklead, and in this it is soft, and occurs in hexagonal prisms or tables. When united with oxygen it forms carbon dioxide, commonly called carbonic acid, or carbonic oxide, according to the proportions of the oxygen; when united with hydrogen, it forms various compounds called hydrocarbons. Compare Diamond, and Graphite. Carbon compounds, Compounds of carbon (Chem.), those compounds consisting largely of carbon, commonly produced by animals and plants, and hence called organic compounds, though their synthesis may be effected in many cases in the laboratory. The formation of the compounds of carbon is not dependent upon the life process. --I. Remsen Carbon dioxide, Carbon monoxide. (Chem.) See under Carbonic. Carbon light (Elec.), an extremely brilliant electric light produced by passing a galvanic current through two carbon points kept constantly with their apexes neary in contact. Carbon point (Elec.), a small cylinder or bit of gas carbon moved forward by clockwork so that, as it is burned away by the electric current, it shall constantly maintain its proper relation to the opposing point. Carbon tissue, paper coated with gelatine and pigment, used in the autotype process of photography. --Abney. Gas carbon, a compact variety of carbon obtained as an incrustation on the interior of gas retorts, and used for the manufacture of the carbon rods of pencils for the voltaic, arc, and for the plates of voltaic batteries, etc.
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