adj.
Pronunciation: ˌ ē -kw ə - ' to ̇ r- ē - ə l, ˌ e-kw ə -
Function: adjective
Date: 1664
1 a : of, relating to, or located at the equator or an equator also : being in the plane of the equator <a satellite in equatorial orbit> b : of, originating in, or suggesting the region around the geographic equator
2 a : being or having a support that includes two axles at right angles to each other with one parallel to the earth's axis of rotation <an equatorial telescope mount> b : extending in a direction essentially in the plane of a cyclic structure (as of cyclohexane) < equatorial hydrogens> ― compare AXIAL