radiolarian earth
Geology
noun
Unconsolidated siliceous rock formed largely from the tests of radiolarians.
Origin
Late 19th century.
- radio play
- radioprotectant
- radioprotection
- radioprotective
- radioprotector
- radio pulse
- radiopure
- radiopurity
- radio-quiet
- radio-quietness
- radio radar
- radio range
- radioreceptor
- radio recorder
- radioresistance
- radioresistant
- radioscan
- radioscanning
- radioscope
- radioscopic
- radioscopy
- radiosensitive
- radiosensitiveness
- radiosensitivity
- radiosensitization