— diamondlike , adj.
/duy"meuhnd, duy"euh-/ , n.
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, 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 sing. or pl. v. ) the suit so marked: Diamonds is trump. Diamonds are trump.
a. the space enclosed by home plate and the three bases; infield.
b. the entire playing field.
14. Print. a 4 1 / 2 -point type of a size between brilliant and pearl.
15. diamond in the rough , a person of fine character but lacking refined manners or graces.
16. made of or set with a diamond or diamonds.
17. having the shape of a diamond: a dress with a diamond print.
18. indicating the 75th, or sometimes the 60th, event of a series, as a wedding anniversary. See table under wedding anniversary .
19. to adorn with or as if with diamonds.
[ 1275-1325; ME diamant diamant-, s. of * diamas, perh. alter. of * adimas ( > F aimant magnet, OPr aziman diamond, magnet), for L adamas ADAMANT, diamond ]