PERPENDICULAR — СИНОНІМІЯ
perpendicular a cord from which a metal weight is suspended pointing directly to the earth''s center of gravity; used to determine the vertical from a given point
WordNet
perpendicular a Gothic style in 14th and 15th century England; characterized by vertical lines and a four-centered (Tudor) arch and fan vaulting
perpendicular at right angles to the plane of the horizon or a base line
WordNet