Able to give advice. / Containing advice; advising.

A warning.

plural of advisory

plural of advisory opinion

(law) An opinion issued by a court that does not have the effect of resolving a specific legal case, but merely advises on the constitutionality or interpretation of a law.

(aviation) A TCAS caution message alerting the pilot of an aircraft to the presence of nearby traffic which does not yet pose an imminent collision hazard.

(aviation) A TCAS warning directing the pilot of an aircraft to take immediate evasive action of a specified type (for instance: "INCREASE CLIMB, INCREASE CLIMB") to avoid a possible impending mid-air collision.

plural of traffic advisory

plural of resolution advisory