Pitch is the distance from the crest of one thread to the next. Because the vast majority of screw threadforms are single-start threadforms, their lead and pitch are the same. Single-start means that there is only one ridge wrapped around the cylinder of the screw's body.
Definition of metropolis. 1  1 : the chief or capital city of a country, state, or region. 2  2 : the city or state of origin of a colony (as of ancient Greece) 3  3a : a city regarded as a center of a specified activity an industrial metropolis a cattle metropolisb : a large important city one of Europe's great metropolises.
Tokyo (æ±äº¬) - the Eastern Capital, formerly Edo (until 1868), the capital and largest city of Japan and in Asia. The Tokyo Major Metropolitan Area includes the cities of Chiba, Kawasaki, Sagamihara, Saitama, and Yokohama, making it the world's most populous metropolitan area.