neoplasm

https://doi.org/10.1351/goldbook.10998

New and abnormal formation of tissue as a consequence of growth by cell proliferation, which may continue after the initial stimulus that initiated the proliferation has ceased, and which may develop into a tumor.

Source:
PAC, 2016, 88, 713. (Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)) on page 783 [Terms] [Paper]