SUMMATIONAL

\sʌmˈe͡ɪʃənə͡l], \sʌmˈe‍ɪʃənə‍l], \s_ʌ_m_ˈeɪ_ʃ_ə_n_əl]\
Sort: Oldest first
 
2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd