Definition of pseudostratum in English:

pseudostratum

noun

Geology
  • A mass of rock resembling a stratum but produced by a process other than sedimentary deposition, e.g. in an igneous rock as a result of parallel fractures.

Origin

Mid 19th century; earliest use found in John Phillips (1800–1874), geologist.

Pronunciation

pseudostratum

/ˌs(j)uːdə(ʊ)ˈstrɑːtəm/ /ˌs(j)uːdə(ʊ)ˈstreɪtəm/