[
  {
    "term": "integral",
    "definition": "A definite integral measures signed accumulation. The integrand gives a rate or density, the differential gives the input unit, and their product determines the accumulated unit."
  },
  {
    "term": "riemann",
    "definition": "Riemann sums approximate accumulation by adding height-times-width contributions. The sample-point rule and partition determine the estimate; refinement generally improves resolution."
  }
]