Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “diamond”

diamond

noun  /ˈdɑɪ·mənd, -ə·mənd/ us  

diamond noun (STONE)

[C/U] an extremely hard, valuable stone prized as a jewel and having many uses in industry: [U] a diamond engagement ring

diamond noun (SHAPE)

geometry [C] a shape with four straight sides that meet to form two wide and two narrow angles, or a square placed with a corner at the bottom

diamond noun (CARDS)

[pl] one of the four suits (= groups) of playing cards, the symbol for which is a diamond shape
(Definition of diamond from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of diamond?
Add Cambridge dictionaries to your browser to your website

Definitions of “diamond” in other dictionaries

Word of the Day

hello stranger

said to a person that you know but have not seen for a long time

Word of the Day

Come on – you can do it! Phrasal verbs with ‘come’.

by Liz Walter​,
November 19, 2014
As part of an occasional series on the tricky subject of phrasal verbs, this blog looks at ones formed with the verb ‘come’. If you are reading this blog, I’m sure you already know come from, as it is one of the first things you learn in class: I come from Scotland/Spain.

Read More 

silver splicer noun

November 17, 2014
informal a person who marries in later life Newly retired and now newlywed – rise of the ‘silver splicers’ Reaching pension age becomes a trigger to tie the knot as baby-boomers begin to redefine retirement

Read More