The word "radioactivates" is spelled with the prefix "radio-" which means pertaining to radiation and the root word "activate" which means to make something active. The stress in this word is on the second syllable "-ac-" and is pronounced /reɪdiəʊˈæktɪveɪts/. The first syllable "ra-" is pronounced as /ˈreɪdɪəʊ/ and the following syllables reflect the natural stress in the root word "activate" /ˈæktɪveɪt/. Therefore, the correct spelling of this word is "radioactivates".
The word "radioactivates" is derived from the combination of two root words: "radioactive" and "activate".
"Radioactive" originates from the word "radioactivity". The term was coined by Marie Curie and her husband Pierre Curie in the late 19th century. It combines the noun "radio-" from the Latin word "radius", meaning ray or beam, with the adjective "active". "Radio-" refers to the emission of radiation, specifically rays and particles emitted by certain elements. "Active" describes the property of being in a state of activity or undergoing a process.
The word "activate" traces its roots to Latin. It comes from the verb "activare", meaning to make active or to energize. It combines the prefix "ad-" which means to or toward, with the verb "vigere" meaning to be lively or vigorous.