ACTINOMETRICAL

\ˌaktɪnə͡ʊmˈɛtɹɪkə͡l], \ˌaktɪnə‍ʊmˈɛtɹɪkə‍l], \ˌa_k_t_ɪ_n_əʊ_m_ˈɛ_t_ɹ_ɪ_k_əl]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd