ac·ti·nism 
(ăktə-nĭz′əm)
(ăktə-nĭz′əm)n.
The intrinsic property in radiation that produces photochemical activity.
- information science
- information superhighway
- information technology
- information theory
- informative
- informatively
- informativeness
- informatory
- informed
- informed consent
- informer
- infotain
- infotainment
- infra-
- infraclass
- infract
- infraction
- infractor
- infra dig
- infrahuman
- infrangibility
- infrangible
- infrangibly
- infraorder
- infrared