P.H.V
Defined in 3 dictionaries — Cyclopedic (1922), Ballentine's (1916), Black's (1910)
The Cyclopedic Law Dictionary
Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
Pro hoc vice, for this occasion.
Ballentine's Law Dictionary
James A. Ballentine · 1916
Pro hac vice, which see.
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
An abbrevlation for "pro hoc vice," for this turn, for this purpose or occasion.