Here are some examples:
* Lipoma: A benign tumor composed of fat cells.
* Myeloma: A type of cancer that affects plasma cells in bone marrow.
* Melanoma: A type of skin cancer that originates in melanocytes.
* Hematoma: A localized collection of blood outside of blood vessels, usually caused by an injury.
However, it's important to note that "-oma" isn't always indicative of a tumor. Sometimes, it might be used to describe a non-tumorous swelling or abnormal accumulation of tissue.
For example, edema describes swelling caused by fluid buildup in tissues.
Therefore, the exact meaning of "-oma" can vary depending on the context. It's best to refer to a medical dictionary or consult a healthcare professional for a more precise understanding of a specific term.