LACTASE

\lˈakte͡ɪs], \lˈakte‍ɪs], \l_ˈa_k_t_eɪ_s]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd
 
1920 - A practical medical dictionary.
By Stedman, Thomas Lathrop
 
1916 - Appleton's medical dictionary
By Smith Ely Jelliffe