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.
Dhaka (Bengali: à¦¢à¦¾à¦à¦¾, pronounced: [ÉÊ±aka]; English /dÉËkÉË/ DAH-kah, /dÉËkÉ/ DAH-kuh, or /dÃ¦kÉ/ DACK-uh) is the capital and largest city of Bangladesh. It is one of the world's most populated cities, with a population of 17 million people in the Greater Dhaka Area. It is also the 3rd most densely populated city in the world.