Definition of main stem in English:

main stem


  • 1The principal stem of a plant.

  • 2The principal stem of a branching anatomical structure, tree diagram, etc.

  • 3The main course of a river.

  • 4The principal street of a town; specifically. Broadway, New York.


Late 17th century; earliest use found in Nehemiah Grew (a1641–1712), botanist and physician. From main + stem.


main stem

/ˌmeɪn ˈstɛm/