Si non omnes
Defined in 2 dictionaries — Ballentine's (1916), Black's (1910)
Ballentine's Law Dictionary
James A. Ballentine · 1916
A writ to assemble the justices whereunder two or more can act, if all are not present.
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
Lat In English practice. A writ of association of justices whereby, if all in cemmisslon cannot meet at the day assigned, it is allowed that two or more may proceed with the business. Cowell; Fitzh. Nat Brev. Ill C.