The Collaborative International Dictionary of English v.0.48:
En bloc \En` bloc"\ [F. Cf. Block, n. ] In a lump; as a whole; all together. "Movement of the ossicles en bloc." --Nature. En bloc they are known as "the herd". --W. A. Fraser. [Webster 1913 Suppl.]WordNet (r) 3.0 (2006):
en bloc adv 1: all together; "the students turned out en masse" [syn: en masse, en bloc, as a group]