1. a chemical reaction and its reverse proceed at equal rates. 2. a stable situation in which forces cancel one another. 3. equality of distribution. 4. a sensory system located in structures of the inner ear that registers the orientation of the head. Familiarity information: EQUILIBRIUM used as a noun is uncommon.
Fort Apache, Arizona. Fort Apache (Western Apache: TÅÊ¼og Hagai) is an unincorporated community in Navajo County, Arizona, United States. Fort Apache is on the Fort Apache Indian Reservation 2 miles (3.2 km) east of Canyon Day. Fort Apache has a post office with ZIP code 85926.
MODERN ERA. Apache populations today may be found in Oklahoma, Arizona, and New Mexico. The San Carlos Reservation in eastern Arizona occupies 1,900,000 acres and has a population of more than 6,000. The San Carlos Reservation and Fort Apache Reservation were administratively divided in 1897.