equatorial
1. equa.to.ri.al \.e--kw*-'to-r-e--*l, .ek-w*-, -'to.r-\ aj 1a: of, located at, or relating to the equator or an equator 1b: of, originating in, or suggesting the region around the geographic equ ator 2: being or having a support that includes two axles at right angles to ea ch other with one parallel to the earth's axis of rotation 2. equatorial n : an equatorial telescope