carbonado

¹ American  

[kahr-buh-ney-doh] / ˌkɑr bəˈneɪ doʊ /

noun

plural

carbonados, carbonadoes

1. a massive, black variety of diamond, found chiefly near São Salvador, Brazil, and formerly used for drilling and other cutting purposes.

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carbonado ² American  

[kahr-buh-ney-doh] / ˌkɑr bəˈneɪ doʊ /

noun

plural

carbonadoes, carbonados

1. a piece of meat, fish, etc., scored and broiled.

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verb (used with object)

carbonadoed, carbonadoing

1. to score and broil.

2. Archaic. to slash; hack.

carbonado ¹ British  

/ ˌkɑːbəˈneɪdəʊ, -ˈnɑːdəʊ /

noun

1. a piece of meat, fish, etc, scored and grilled

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verb

1. to score and grill (meat, fish, etc)

2. archaic to hack or slash

carbonado ² British  

/ -ˈnɑːdəʊ, ˌkɑːbəˈneɪdəʊ /

noun

1. Also called: black diamond.  an inferior dark massive variety of diamond used in industry for polishing and drilling

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Etymology

Origin of carbonado¹

1850–55; < Portuguese: carbonate

Origin of carbonado²

1580–90; < Spanish carbonada, equivalent to carbón charcoal ( see carbon) + -ada -ade ¹

Example Sentences

The gem is a carbonado, which is one of the toughest forms of natural diamond.

From BBC • Feb. 10, 2022

The gem is a carbonado, one of the toughest forms of natural diamond.

From BBC • Feb. 3, 2022

Also known as a carbonado diamond, it is possible the black diamond came from outer space.

From Reuters • Jan. 27, 2022

Black diamonds, also known as carbonado, are extremely rare, and are found naturally only in Brazil and Central Africa.

From Seattle Times • Jan. 17, 2022

Both bort and carbonado seem to be really aggregates of crystallized diamond, but the carbonado is so nearly structureless that it was till recently regarded as an amorphous modification of carbon.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus" by Various