RE /ˌɑːr ˈiː/ noun [uncountableU]British EnglishBrE
RRSES (Religious Education) a subject taught in schools 宗教课,宗教教育
From Longman Business Dictionary
rere /riː/prepositionprep
concerning; used in business letters and notes to introduce the subject that you are writing about
Re: your complaint dated April 8.
ReRe /riː/ noun [uncountableU]
INSURANCEabbreviation for REINSURANCE (=when an insurance company arranges to share a large insurance risk with other companies), often used in the names of reinsurance companies
Munich Re, the world’s biggest reinsurer
Originre-
Old FrenchLatin, “back, again”
re1
(1700-1800)Latin“on the matter”, from res“thing, matter”