colossal /kə-losˈəl or ko-/

1. Like a colossus
2. Gigantic
3. Of the order of columns and pilasters that extend more than one storey (architecture)

• radioactive waste
• radioactivities
• radioactivity
• radio alarm
• radio altimeter
• radio amateur
• radio amateurs
• radio assay
• radio assays
• radio astronomies
• radio astronomy
• radioautograph
• radioautographs
• radio beacon
• radio beacons
• radiobiologies
• radiobiologist
• radiobiologists
• radiobiology
• radiocarbon
• radiocarbon dating
• radiocarbons
• radiochemical
• radiochemist
• radiochemistry