radioactive etymology

English word radioactive comes from English active, English radio-, and later French radioactif (Radioactive.)

Detailed word origin of radioactive

Dictionary entryLanguageDefinition
active English (eng) A person or thing that is acting or capable of acting. (gay sexual slang) (of a homosexual man) enjoying a role in anal sex in which he penetrates, rather than being penetrated by his partner.. (heading, grammar) About verbs.. (specifically, of a volcano) Being an active volcano. Compare extinct and dormant. Applied to a form of the verb; — opposed to passive. See active voice.. Applied to [...]
radio- English (eng) (anatomy) radius (bone). (geometry) radius. Radiation. Radio (broadcasting).
radioactif French (fra) Radioactive.
radioactive English (eng) (figurative, rare) Dangerous and disgusting (particularly of ideas).. Exhibiting radioactivity.

Words with the same origin as radioactive

Descendants of active
activate activist interaction