Millimeter
Millimeter
Millimeter (pronunciation: /ˈmɪlɪˌmiːtər/), abbreviated as mm, is a unit of length in the International System of Units (SI). It is defined as one thousandth of a meter, the SI base unit of length.
Etymology
The term "millimeter" comes from the Latin words mille meaning "thousand" and metrum meaning "measure".
Usage in Medicine
In the field of medicine, the millimeter is commonly used to measure small lengths or distances, such as the thickness of skin lesions, the size of cells or bacteria, or the diameter of medical equipment like catheters. It is also used in medical imaging techniques like MRI and CT scan to measure the size of tumors or other abnormalities.
Related Terms
- Micrometer: A unit of length equal to one thousandth of a millimeter.
- Nanometer: A unit of length equal to one millionth of a millimeter.
- Picometer: A unit of length equal to one trillionth of a millimeter.
- Meter: The base unit of length in the International System of Units (SI), equal to 1000 millimeters.
- Centimeter: A unit of length equal to one hundredth of a meter, or ten millimeters.
External links
- Medical encyclopedia article on Millimeter
- Wikipedia's article - Millimeter
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