Found in the following dictionaries
OTCWL2014 (NASPA Word List 2014)
"Chemoprevention" Definition
noun
The use of chemical agents, drugs, or food supplements to prevent disease. also called chemoprophylaxis.
Source: American Heritage Dictionary
The prevention of disease by the use of food supplements, drugs etc.
Source: Wiktionary
The use of agents to prevent or slow the development of cancer.
Source: Merriam-Webster
The prevention of disease by the administration of drugs or other chemical agents; (in later use especially) the administration of dietary supplements, plant extracts, etc., to prevent the development of cancer.
Source: Oxford Dictionary
We love the game of Scrabble®, which is why we created Free Scrabble Dictionary - a simple lookup tool to check if the word you want to play is valid in the game of Scrabble®. At the top of every page, you can enter your word and click "Search Dictionary." We'll let you know whether your word is playable and provide a few definitions as well.