Definition of multitudinousness in English:

multitudinousness

noun

See multitudinous

‘As the years progressed, he appeared to thrive on the multitudinousness of his tasks.’
  • ‘He loves the sheer multitudinousness of the world.’
  • ‘It is this that enables us to know the multitudinousness that the world is.’
  • ‘Great mountains, however bold, are always full of endless fracture and detail, and indicate on the brows and edges of their cliffs, both the multitudinousness, and the deeply wearing continuance, of the force of time, and stream, and tempest.’