Rom
来自Big Physics
mid 19th century: Romani, ‘man, husband’, probably from Sanskrit ḍomba ‘wandering musician’, but also influenced by Byzantine Greek Rōmaios ‘Roman, citizen of Byzantine empire’, since the Roma formed into a distinct ethnic group within the Byzantine Empire.
wiktionary
From Romani rrom(“Romani man”), probably ultimately from Sanskrit डोम(ḍoma, “member of a low caste of travelling musicians and dancers”). See some more information at Roma.
The other major categories of words for the Roma are cognates of Gypsy (words related to Egypt) and cognates of tzigane (words derived from Greek); see those entries for more information.
Not related to Romanian or Roman.
Back-formation from Romford.
etymonline
Rom
"male Gypsy," 1841, see Romany.
