What is another word for diamond?

Common synonyms for diamond include rhombus, rhomb.

What is the plural of diamond?

The plural of diamond is diamonds.

/ˈdaɪ.ə.mənd/noun2 syllables

Diamond means: a parallelogram with four equal sides; an oblique-angled equilateral parallelogram.

noun, as in a parallelogram with four equal sides; an oblique-angled equilateral parallelogram

rhombus, rhomb

noun, as in the area of a baseball field that is enclosed by 3 bases and home plate

baseball diamond, infield

noun, as in the baseball playing field

ball field, baseball field

noun, as in very hard native crystalline carbon valued as a gem

also used for diamond

diamantine

Includes material from Wiktionary, CC BY-SA 4.0.

noun

a parallelogram with four equal sides; an oblique-angled equilateral parallelogram

the area of a baseball field that is enclosed by 3 bases and home plate

the baseball playing field

very hard native crystalline carbon valued as a gem

a transparent piece of diamond that has been cut and polished and is valued as a precious gem

a playing card in the minor suit that has one or more red rhombuses on it“he led a small diamond”

Definitions from the Open English WordNet, CC BY 4.0.

Diamond is the hardest mineral, talcum is the softest.ariarin
An apple is a fruit, and a diamond is a precious stone.carlosalberto
Elma considers herself the owner, but the diamond belongs to her sister.carlosalberto
What's diamond is diamond, what's flint is flint.sabretou
When she returned to her room, the diamond ring was gone.CK
A card deck consists of four suits: diamonds, hearts, clubs and spades.AlanF_US
The ring sports three diamonds, each equaling one tenth of a carat.papabear
The icebergs took the most wonderful shapes, and sparkled like diamonds.Hybrid

Sentences from Tatoeba, CC BY 2.0 FR, credited to their authors.

as a noun