LARYNGOTRACHEAL

\lˈaɹɪŋɡˌɒtɹɐkˌi͡əl], \lˈaɹɪŋɡˌɒtɹɐkˌi‍əl], \l_ˈa_ɹ_ɪ_ŋ_ɡ_ˌɒ_t_ɹ_ɐ_k_ˌiə_l]\
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2010 - New Age Dictionary Database
By Oddity Software
 
1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.
 
1920 - A dictionary of scientific terms.
By Henderson, I. F.; Henderson, W. D.
 
1920 - A dictionary of scientific terms (6th edition)
By J.H. Kenneth