1. In a widespread way
   "oxidation ponds are extensively used for sewage treatment in the Midwest"

See also: extensive

• excursion
• excursion rate
• excursionist
• excursive
• excursus
• excusable
• excusably
• excusatory
• excuse
• excuse me
• excused
• excuser
• exeat
• exec
• execrable
• execrably
• execrate
• execration
• executability
• executable
• executant
• execute
• executed
• executing
• execution