- quad|ril|lion
- quad|ril|lion «kwod RIHL yuhn», noun, adjective.1. (in the U.S., Canada, and France) 1 followed by 15 zeros.2. (in Great Britain and Germany) 1 followed by 24 zeros.╂[alteration of French quadrillon < quadri- four + million million]
Useful english dictionary. 2012.