Adjective
equal-area (not comparable)
(cartography) Of a map, having the property that equal areas on the map represent equal areas on the mapped surface.
Therefore, Mercator himself used the equal-area sinusoidal projection to show relative areas. Source: Internet
The stretch factor, 2 in this case, is what distinguishes the variations of cylindric equal-area projection. Source: Internet
Vertical scale and horizontal scale are the same throughout, resulting in an equal-area map. Source: Internet