In order to specify whether a or an, I need to know whether the articulation is with [ar] like vowel sound or [r] like consonant sound. So is RHS a vowel or a consonant sounding in the initial? So a RHS or an RHS?
1 Answer
You should say an RHS because it is spoken out loud as [Are-Aitch-Ess] with initials. Sometimes, people say acronyms differently but apparently not here like FAG '[Ef Ei Ge]' (an FAG) or '[F \ae g]' (a FAG).
RHS could stand for Royal Horticultural Society and Removal Heat System.
Related
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1[Are-Eh-Ess] sounds more like RAS surely it should be spelled Aitch (or Haitch as some insist) Commented Aug 24, 2016 at 22:42
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2Definitely an. An RHS (Royal Horticultural Society) employee informed me that the best time for planting chrysanthemums is April or May.– WS2Commented Aug 24, 2016 at 22:50
a removal heat system (RHS)
:)