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antidiuretic hormone

(Encyclopedia) antidiuretic hormoneantidiuretic hormoneănˌtēdīy&oomacr;rĕtˈĭk [key], polypeptide hormone secreted by the posterior pituitary gland. Its principal action is to regulate the amount…

Swithin, Saint

(Encyclopedia) Swithin or Swithun, SaintSwithin or Swithun, Saintboth: swĭᵺˈən [key], fl. 860, English bishop of Winchester. He was buried, according to his wishes, outside his church, but his relics…

probability

(Encyclopedia) probability, in mathematics, assignment of a number as a measure of the “chance” that a given event will occur. There are certain important restrictions on such a probability measure.…

lockout

(Encyclopedia) lockout, intentional closing up of a company, factory, or shop by an employer to prevent employees from working during a strike or labor dispute. The term lockout is sometimes confused…

pentimento

(Encyclopedia) pentimentopentimentopĕnˌtəmĕnˈtō [key], painter's term for the evidence in a work that the original composition has been changed. Often the opaque pigment with which the artist covered…

anesthesiology

(Encyclopedia) anesthesiologyanesthesiologyănˌĭsthēˌzēŏlˈəjē [key], branch of medicine concerned primarily with procedures for rendering patients insensitive to pain, and for supporting life systems…

health-care proxy

(Encyclopedia) health-care proxy, legal document in which a person assigns to another person, usually called an agent or proxy, the authority to make medical decisions in case of incapacitation. It…

diffusion

(Encyclopedia) diffusion, in chemistry, the spontaneous migration of substances from regions where their concentration is high to regions where their concentration is low. Diffusion is important in…

Doppler effect

(Encyclopedia) Doppler effect, change in the wavelength (or frequency) of energy in the form of waves, e.g., sound or light, as a result of motion of either the source or the receiver of the waves;…

Antichrist

(Encyclopedia) AntichristAntichristănˈtĭkrīst [key], in Christian belief, a person who will represent on earth the powers of evil by opposing the Christ, glorifying himself, and causing many to leave…