Definition of vertisol in US English:

vertisol

noun

Soil Science
  • A clayey soil with little organic matter which occurs in regions having distinct wet and dry seasons.

    • ‘The soil at the experimental site was a Lawes brown black clay loam, which is a moderately fertile deep alluvial, weakly cracking vertisol that was well drained.’
    • ‘The soil around here is of a type called grey cracking clay vertisols, it's also called self-mulching black soil.’

Origin

1960s: from vertical + Latin solum ‘soil’.

Pronunciation

vertisol

/-ˌsôl/