14 letters
- postgraduation22
- postliberation22
- postproduction26
- predestination20
- predevaluation25
- predisposition22
- prefabrication27
- preponderation23
- prepublication29
- pressurization28
- presupposition25
- pretermination22
- prettification24
- preunification26
- prioritization27
- proprioception27
- pseudoscorpion26
- quantification32
- radicalization29
- recanalization29
- recapitulation23
- recodification25
- recolonization29
- recommendation26
- reconciliation23
- reconfirmation25
- reconsecration22
- reconstitution20
- reconstruction23
- redintegration19
- redistillation18
- redistribution20
- regularization28
- rehabilitation21
- reimplantation23
- reinstallation18
- reintroduction21
- reinvigoration22
- remobilization31
- remonetization28
- reorganization27
- repolarization28
- representation19
- repristination19
- reregistration17
- retransmission19
- retrogradation18
- revalorization29
- revitalization29
- revivification29
- rigidification24
- sanctification25
- saponification25
- schematization32
- sclerotization28
- secularization29
- securitization28
- sensualization27
- seroconversion23
- silicification25
- simplification28
- solidification23
- solubilization30
- somnambulation27
- sophistication23
- specialisation22
- specialization31
- stigmatization29
- stratification21
- stultification23
- subinfeudation25
- substantiation20
- superannuation22
- superelevation24
- supererogation21
- superinduction25
- superinfection26
- supernutrition21
- superovulation25
- superscription25
- symmetrization32
- tatterdemalion20
- tergiversation21
- thermalization30
- thermojunction34
- transamination20
- transformation22
- transmigration21
- transportation19
- transvaluation22
- traumatization28
- trivialization29
- ultraprecision23
- unappreciation26
- uncircumcision30
- underinflation23
- undernutrition20
- undervaluation24
- vasodilatation21
- volatilization30
- weatherization29
- westernisation19
- westernization28