1. number system any notation for the representation of numbers
  2. numerousness a large number
  3. numerosity a large number
  4. nitrous acid an unstable inorganic acid known only in solution and as nitrite salts
  5. reserve assets capital held back from investment in order to meet probable or possible demands
  6. numeration system any notation for the representation of numbers
  7. nurse's aide someone who assists a nurse in tasks that require little formal training
  8. numerous amounting to a large indefinite number
  9. Rumex acetosa European sorrel with large slightly acidic sagittate leaves grown throughout north temperate zone for salad and spring greens
  10. nonresistance group refusal to resort to violence even in defense against violence
  11. mercy seat the golden covering of the ark of the covenant
  12. numbers racket an illegal daily lottery
  13. numerologist a believer in numerology
  14. humorousness the trait of merry joking
  15. timorousness fear of the unknown or unfamiliar or fear of making decisions
  16. Urocystis a genus of smut fungi belonging to the family Tilletiaceae
  17. amorousness a feeling of love or fondness
  18. genus Isoetes type and genus of the Isoetaceae and sole extant genus of the order Isoetales
  19. numbers game an illegal daily lottery
  20. numerate determine the number or amount of