1. to insert something between other things or parts
2. to estimate or calculate intermediate values between known data points
Usage: mathematics; statistics
3. to add words or passages to a text, especially without authorization
Usage: literary; textual criticism

Examples

• The editor interpolates explanatory notes throughout the ancient manuscript.
• The software interpolates missing data points to create a smooth curve.
• She interpolates her own comments between the original paragraphs.
• The mathematician interpolates values to fill gaps in the dataset.
• Scholars believe someone later interpolates these verses into the original text.
• The program interpolates pixel values to enhance image resolution.