(psychiatry) an unconscious process that tries to reduce the anxiety associated with instinctive desires
the atomic process that occurs during a chemical reaction
the technical aspects of doing something
a natural object resembling a machine in structure or function
device consisting of a piece of machinery; has moving parts that perform some function
(philosophy) the philosophical theory that all phenomena can be explained in terms of physical or biological causes
(sports) the team that is trying to prevent the other team from scoring
the act of defending someone or something against attack or injury
an organization of defenders that provides resistance against attack
