What does the word invalidism mean?

Usage examples for invalidism

  1. They had no great belief in Thompson's invalidism. – The Main Chance by Meredith Nicholson
  2. I saw him drive by nearly every afternoon, accompanied by his nurse, a good- humored young fellow, who helped him tenderly into the carriage, and drove, while he lay back with the irritated expression that the sense of enforced idleness and invalidism gives a man in the heyday of youth. – A Village Ophelia and Other Stories by Anne Reeve Aldrich
  3. When people have nothing else to do, they sink into invalidism. – Miss Merivale's Mistake by Mrs. Henry Clarke