There are 2 definitions of Ir in English:

Ir1

Syllabification: Ir

symbol

The chemical element iridium.

Definition of Ir in:

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Word of the day meretricious
Pronunciation: merəˈtriSHəs
adjective
apparently attractive but having in reality no value...

There are 2 definitions of Ir in English:

IR2

Syllabification: IR

abbreviation

Infrared.

Definition of Ir in: