MICROCRYSTALLINE

\mˌa͡ɪkɹə͡ʊkɹˈɪstɐlˌa͡ɪn], \mˌa‍ɪkɹə‍ʊkɹˈɪstɐlˌa‍ɪn], \m_ˌaɪ_k_ɹ_əʊ_k_ɹ_ˈɪ_s_t_ɐ_l_ˌaɪ_n]\
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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
 
1898 - American pocket medical dictionary
By Willam Alexander Newman Dorland
 
1916 - Appleton's medical dictionary
By Smith Ely Jelliffe