how to display the letter ൺ using keyboard in a text editor

Question

I am having trouble in displaying this line ൺ while using google keyboard

I found out that the encodings corresponding of ൺ is

HTML Entity:    
ൺ
ൺ
UTF-8 Encoding: 0xE0 0xB5 0xBA
UTF-16 Encoding:    0x0D7A
UTF-32 Encoding:    0x00000D7A

How can i display this letter alone in a text editor using keyboard combinations

Is there any way in which i can map this encoding to a key combination in text editors such as gedit or in word processing systems like ms-word so that i can invoke those keys while pressing a key combination

Please excuse me if this is a stupid question ..Only because of hours of labour i am posting it here as i couldnt find a decent method on how to do this

I know you can copy paste that character alone

But while serious texting scenerious that seems to be irritating

Any help would be highly appreciable