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Is it correct to write 'an'in the sentence "proud of being 'an' LSRite", where LSR is an acronym?

marked as duplicate by user140086, ab2, anongoodnurse, Cerberus, user66974 May 22 '16 at 13:59

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Oxford definition of an:

The form of the indefinite article used before words beginning with a vowel sound

In other words, it's the sound of the next word that determines a vs an, not the letter with which it begins. Since LSRite begins with an el sound, it would be correct to us an.

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