Carcinogenesis is the process which leads to development of cancer Carcinogenesis may be a matter of induction by chemical, physical, or biological agents, of neoplasms that are usually not observed, an earlier induction of neoplasms that are usually observed, and/or the induction of more neoplasms than are usually found
Development of carcinoma; or, in more recent usage, producing any kind of malignancy
The origin or production of a benign or malignant tumor The carcinogenic event modifies the genome and/or other molecular control mechanisms of the target cells, giving rise to a population of altered cells
the development of cancer A carcinogen is a chemical or physical agent (e g , drugs, radiation) that facilitates the development of cancer (adjective carcinogenic)