What does neoplasia mean?
Neoplasia is the medical term for abnormal growth and multiplication of cells that produces, or may produce, a neoplasm, or tumor. It can refer to benign growths as well as malignant ones, although the term is especially common in discussions of cancer and carcinogenesis. The word is used mainly in pathology, oncology, toxicology, and biomedical research. In clinical descriptions, it helps identify the development of abnormal tissue rather than simply naming the resulting mass. Neoplasia is related to the broader word neoplasm and to the adjective neoplastic, which means pertaining to or involving a tumor. Because it describes a biological process, rather than merely an imaging finding or symptom, neoplasia is most often encountered in diagnoses, research literature, and technical medical communication.
nounThe abnormal growth and proliferation of cells that can lead to the formation of a neoplasm, commonly a tumor. The term may refer to either benign or malignant cellular growth and is often used specifically in the context of cancer.
- The formation or proliferation of a neoplasm, especially an abnormal or malignant growth of cells.
"Persistent inflammation can increase the risk of neoplasia in the affected tissue."
"The biopsy showed changes consistent with neoplasia in the cervical tissue."
"Researchers studied the genetic factors that promote neoplasia in laboratory models."
The plural neoplasias is used when referring to multiple cases or instances of tumor-forming cellular growth.
"The study documented neoplasias in several different organs."
Neoplasia names the process by which abnormal cells begin forming a tumor—the cellular turning point that pathology closely tracks.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does neoplasia come from?
Neoplasia combines the combining form neo-, from Greek neos, meaning “new,” with -plasia, from Greek plasis, meaning “formation” or “growth.” The construction reflects the medical concept of new cellular growth forming a tumor or mass. Related terms include neoplasm and neoplastic; dysplasia also derives from the same Greek growth-forming vocabulary but refers to abnormal development of cells.
Related word forms
How neoplasia is actually used
This is primarily a medical and pathological term. In strict usage, it can describe the general process of tumor formation; in many clinical contexts, especially when discussing malignant disease, it is used more narrowly for cancer-related cellular proliferation.
Easily confused with neoplasia
Neoplasia is the process of abnormal cellular growth, whereas a neoplasm is the resulting mass or growth of cells.
Dysplasia is abnormal cell growth that is not necessarily a newly formed tumor, while neoplasia refers more specifically to tumor-forming proliferation.