Re vs. Ref

Re and Ref Definitions
Re
The second tone of the diatonic scale in solfeggio.
Ref
A referee.
Re
Variant of Ra1.
Ref
(informal) referee
Re
In reference to; in the case of; concerning.
Ref
Abbreviation of reference
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Re
About, regarding, with reference to; especially in letters, documents and emails.
Ref
Abbreviation of refectory
Re
(music) a syllable used in solfège to represent the second note of a major scale.
Ref
Refrigerator.
Re
A syllable applied in solmization to the second tone of the diatonic scale of C; in the American system, to the second tone of any diatonic scale.
Ref
To referee; to act as a referee in a sport or game.
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Re
A rare heavy polyvalent metallic element that resembles manganese chemically and is used in some alloys; is obtained as a by-product in refining molybdenum
Ref
(sports) the chief official (as in boxing or American football) who is expected to ensure fair play
Re
Ancient hawk-headed Egyptian sun god; a universal creator
Re
The syllable naming the second (supertonic) note of any major scale in solmization