condition

Condition is a noun that denotes the state of something with respect to its appearance, quality, or functioning, or the circumstances that affect it. The term also appears in phrases such as "in good condition" or "under condition that." The word derives from Latin condicio, meaning "agreement, stipulation, or state," and has related forms such as conditional and conditioning.

In health and medicine, a medical condition refers to a disease, disorder, or other health issue. Conditions can be acute or chronic and influence prognosis and treatment. Examples include chronic conditions like diabetes, hypertension, or asthma, as well as acute conditions such as infection or injury. Management usually involves diagnosis, monitoring, lifestyle changes, medications, or procedures.

In logic and computer science, a condition is a proposition that can be true or false. Conditional statements test a condition and branch execution accordingly (if/else, switch). Conditions are formed from comparisons (equals, greater than) and logical connectives (and, or, not). The concept underpins decision making in algorithms and software.

In law and contract law, a condition may be a stipulation that must be met before a right or obligation arises; conditions precedent or subsequent can affect enforceability or timing. Conditions are also used in warranties, licenses, and terms of sale.

In everyday language, "condition" can describe the current state or readiness, such as equipment being in good condition or a person being in no condition to travel.