1. the process of training or accustoming someone or something to behave in a certain way or to accept certain circumstances
2. the process of improving physical fitness through exercise and training
3. the treatment of something to give it particular properties or to prepare it for use

Examples

• The dog’s conditioning made it respond immediately to the whistle.
• Athletes undergo rigorous conditioning to prepare for competition.
• The air conditioning system keeps the building cool in summer.
• Classical conditioning involves pairing stimuli to create learned responses.
• Hair conditioning treatments help restore moisture and shine.
• Military conditioning prepares soldiers for combat situations.
• The conditioning of the leather made it soft and durable.