extrapolation (n.)

• accession
• accessory
• accompaniment
• actualization
• addendum
• addition
• additive
• adjunct
• adjuvant
• annex
• annexation
• appanage
• appendage
• approximation
• appurtenance
• attachment
• augmentation
• coda
• complement
• concomitant
• continuation
• corollary
• differentiation
• division
• equation
• evolution
• extension
• exteriorization
• externalization
• fixture
• increase
• increment
• integration
• interpolation
• inversion
• involution
• multiplication
• notation
• objectification
• offshoot
• pendant
• practice
• projection
• proportion
• reduction
• reinforcement
• subtraction
• supplement
• tailpiece
• transformation