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Beginning
1
Pronunciation
2
Noun
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corundum
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ಕನ್ನಡ
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From Wiktionary
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The
Simple English Wikipedia
has an article on:
Corundum
Pronunciation
[
change
]
(
UK
) (
US
)
IPA
(
key
)
:
/kəˈrʌn.dəm/
Audio (UK)
(
file
)
Noun
[
change
]
Singular
corundum
Plural
corundums
Corundum
(
mineralogy
) (
countable
&
uncountable
)
Corundum
is an
extremely
hard
mineral
that is used as an
abrasive
.
Sapphire
and
ruby
are
varieties
of
corundum
.
Categories
:
Nouns
Countable nouns
Uncountable nouns
Mineralogy
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