Definition of metachronous in US English:



  • 1Biology= metachronal.

  • 2Physical Geography and Palaeontology. Of or relating to a geographical or palaeobiological feature which is composed of several parts formed at different times.

  • 3Medicine. Occurring sequentially or subsequently rather than simultaneously; especially designating a neoplasm that occurs as a later primary (rather than as a synchronous primary or a metastasis).


Early 20th century; earliest use found in American Naturalist. From meta- + -chronous.