A room in a house, in which the head of the household sleeps, typically larger and better furnished than other bedrooms.

(physics) A technique used to visualize the three-dimensional structure of solids by employing an energetic ion beam to fragment the atomic or molecular constituents from a surface

(medicine) A bag used to resuscitate a patient by supplying air or oxygen directly to the trachea and into the lungs.

(film) A master shot in which the camera moves relative to the performance.

(astronomy) a relationship that specifies the mass distribution of a newly formed stellar population

(mathematics) A function that gives the relative probability that a discrete random variable is exactly equal to some value.

The weighted average of the atomic masses of the naturally occurring isotopes of an element.

In a massive manner, in a way that appears large, heavy or imposing. / (slang) Greatly.

The surgical procedure to remove all or part of a breast and sometimes nearby tissues.

Obsolete form of mass.