The comparison of an instrument response to known values of a parameter being measured.

A disease characterized by malignant, uncontrolled cell growth in body tissue.

A substance capable of producing cancer in a living organism.

Part of basal ganglia; damage causes forms of aphasia.

See Constant Air Volume.

Space below the flooring and above the suspended ceiling that accommodates the mechanical and electrical equipment and is used as part of the air distribution system. The space is kept under negative pressure.

A chemical which acts as a poison by temperature to meet heating and cooling needs.

Headache, pain in the head.

Occupies most of the posterior cranial fossa; damage produces ataxia, slurring of speech.

Expansive mass of brain tissue covering the older parts of the brain including cerebral hemispheres and formed of sulci, consisting of 4 parts (frontal, parietal, occipital, temporal); 6th division of the C.N.S.; involved in vision, hearing, learning, memory, association, etc.