This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. Formation or production of tumors.

n. Production of a new tumor or tumors.

n. The process involved in the production of a new tumor or tumors.

"These observations suggest that there may be a requirement for polyunsaturated fat in mammary tumorigenesis, which is not satisfied by fats such as coconut oil or beef tallow, but can be provided by adding 3% sunflower seed oil to diets containing these fats."

tumorigenicity    tumor    tumorigenic   

glycolysis    signal-transduction    gluconeogenesis    bronchoconstriction    outbreaking