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v. de·con·di·tioned, de·con·di·tion·ing, de·con·di·tions
1. Psychology To cause (a conditioned response) to become extinct.
2. To cause to decline from a condition of physical fitness, as through a prolonged period of inactivity or, in astronauts, through weightlessness in space.
To lose physical fitness.
to take away or cancel conditioned responses in (a person)
de•con•di•tion(ˌdi kənˈdɪʃ ən)
1. to diminish the physical strength or stamina of; weaken.
2. to diminish or eliminate the conditioned responses or behavior patterns of.