corundum
An extremely hard mineral, a form of aluminum oxide with the chemical formula Al₂O₃,…An extremely hard mineral, a form of aluminum oxide with the chemical formula Al₂O₃, that occurs in the form of the gemstones sapphire and ruby; it is used as an abrasive.
» Sapphire is the blue form of corundum.
Значення
значень: 1(злічуване, незлічуване)An extremely hard mineral, a form of aluminum oxide with the chemical formula Al₂O₃, that occurs in the form of the gemstones sapphire and ruby; it is used as an abrasive.
Korund
кору́ндkorúnd
кору́ндkorúnd
very hard mineral used as an abrasive
Приклади
речень: 6Sapphire is the blue form of corundum.
Ruby is the red form of corundum.
Several precious stones are a form of corundum.
Corundum is a form of aluminum oxide.
Corundum comes in all colors of the rainbow.
Переклади
мов: 9За значеннями 1
За значеннями 1
За значеннями 1
Походження
From Tamil குருந்தம் (kuruntam, “ruby, sapphire”) First attested in the early 18th centuryFrom Tamil குருந்தம் (kuruntam, “ruby, sapphire”) First attested in the early 18th century.
Wiktionary, CC BY-SA 4.0 · source
Форми
множина: corundumsСиноніми
синонімів: 1- very hard mineral used as an abrasive:corundom
Спільнокореневі
пов’язаних слів: 4Уроки до слова
уроків: 1- A1Злічувані та незлічувані іменники — Бо воно може бути незлічуваним