The IBM Printer Model 4 was a dot-matrix point-of-sale printer launched in 1991. It and its successor, the IBM 4610, are still used by retailers such as El Corte Inglés, Publix, Zara, and Ripley.{{Citation needed|date=October 2010}} The printer was discontinued in 2005.

• Inverse electron demand Diels-Alder reaction
• Inverse electron-demand Diels–Alder reaction
• Inverse energy cascade
• Inverse error function
• Inverse estuary
• Inverse function integration
• Inverse functions & differentiation
• Inverse Gaussian
• Inverse geodetic problem
• Inverse grading
• Inverse index
• Inverse interval
• Inverse Laplace transform of derivatives
• Inverse law of mixtures
• Inverse logistic transform
• Inversely correlated
• Inverse matrices
• Inverse matrix gamma distribution
• Inverse multivariate gamma distribution
• Inverse normal distribution
• Inverse Phase
• Inverse probability weighting
• Inverse problems
• Inverse process
• Inverse ratio ventilation