• A state of being.
• Living condition, see Quality of life.
• In health, a disease, such as a heart condition.
• A proposition upon which another proposition depends, such as "if-then" statements. See logical conditional.
• necessary and sufficient condition
• To cause a certain response to a stimulus, see conditioning.
• To replace moisture or oils, especially in hair, see conditioner.
• To change climate to an appropriate level, see air conditioning.
• A status effect which is usually negative, see Condition (computer gaming).
• A state which is induced in the subject of a psychological experiment, see condition (experimental psychology).
• The Condition number, a measure of a matrix in digital computation.
• In contract law, part of Covenants, conditions and restrictions, an indispensible condition; in Latin, Conditio sine qua non.
• In criminal law, a necessary part of probation or parole, often called a conditional sentence.

See also

• Conditional (disambiguation)

References