(medicine) The anatomic and physiological effect that an ectopic mass (such as a tumor, hematoma, or pleural effusion) causes by displacing or pushing against eutopic structures. It may squeeze and thus occlude blood vessels or lymphatic vessels; pinch nerves; disrupt gastrointestinal volume and peristalsis; and so on.

plural of centre of mass

(physics) The mass of an object as measured by its interaction with gravity; it is equal to its inertial mass.

(physics) The mass of an object measured as its resistance to being accelerated by an applied force; it is equal to its gravitational mass.

plural of mass spectrometer

plural of air mass

plural of gravitational mass

plural of solar mass

plural of Jupiter mass

plural of Earth mass