Oncometer

Part of speech: noun

Definitions

1. A specialized instrument used to assess levels of tumor markers in biological specimens
2. An analytical device aimed at quantifying cancer-related proteins in various bodily fluids
3. A device designed for measuring the concentration of tumor-associated substances in biological samples

Etymology: "Oncometer" is a compound built from two Greek-derived elements. The first, "onco-", comes from Greek "onkos," meaning "mass" or "bulk," and in modern scientific use it refers to tumors, as in "oncology," the study of cancer. The second, "-meter," comes from Greek "metron," meaning "measure," and appears in words like "thermometer" and "barometer." Put together, the name describes exactly what the instrument does: it measures tumors, or more precisely, the tumor markers present in a sample. The word follows the same pattern as older instrument names, where a Greek root for what is measured is joined to "-meter" to name a device. Here the combining form "onco-" was chosen to point to cancer, so the term signals its purpose directly from its parts.