verb, -lat⋅ed, -lat⋅ing.| 1. | to introduce (something additional or extraneous) between other things or parts; interject; interpose; intercalate. |
| 2. | Mathematics. to insert, estimate, or find an intermediate term in (a sequence). |
| 3. | to alter (a text) by the insertion of new matter, esp. deceptively or without authorization. |
| 4. | to insert (new or spurious matter) in this manner. |
| 5. | to make an interpolation. |