interpolate

 
Pronunciation: /ɪnˈtəːpəleɪt/

verb

[with object]
  • 1insert (something of a different nature) into something else: illustrations were interpolated in the text
  • insert (words) in a book or other text, especially in order to give a false impression as to its date.
  • alter or enlarge (a text) by insertion of new material.
  • Mathematics insert (an intermediate value or term) into a series by estimating or calculating it from surrounding known values.
  • 2interject (a remark) in a conversation: [with direct speech]: ‘I dare say,’ interpolated her employer

Derivatives

interpolation

Pronunciation: /-ˈleɪʃ(ə)n/
noun

interpolative

Pronunciation: /-lətɪv/
adjective

Origin:

early 17th century: from Latin interpolat- 'refurbished, altered', from the verb interpolare, from inter- 'between' + -polare (related to polire 'to polish')