The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
Appendix I
Indo-European Roots
ENTRY:
ambhi
DEFINITION:
Also bhi. Around. Probably derived from *ant-bhi, from both sides (see ant-). 1. Reduced form *bhi.a.by1; abaft, but, from Old English bi,b,be, by; b. be-, from Old English be-, on all sides, be-, also intensive prefix; c.beleaguer, from Middle Dutch bie, by; d.bivouac, from Old High German bi, by, at. ad all from Germanic *bi,*bi- (intensive prefix). 2a.Ember Day, from Old English ymbe, around; b.ombudsman, from Old Norse um(b), about, around; c.umlaut, from Old High German umbi, around. ac all from Germanic *umbi.3a. ambi-, from Latin ambi-, around, about; b.alley1, alley-oop, ambulance, ambulate, andante, funambulist, perambulate, preamble, from Latin amb-, around, about, in ambulre, to go about, walk (*alre, to go). 4. amphi-, from Greek amphi, around, about. 5. Celtic *ambi, around, in compound *amb(i)-ag-to- (see ag-). (Pokorny ambhi 34.)