■ noun a world map projection made on to a cylinder in such a way that all parallels of latitude have the same length as the equator.
Origin
from Mercator , Latinized name of the 16th-cent. Flemish geographer Gerhard Kremer.
MERCATOR PROJECTION
Meaning of MERCATOR PROJECTION in English
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004