Correct spelling for the English word "suggestlonlst" is [səd͡ʒˈɛslɒnlst], [sədʒˈɛslɒnlst], [s_ə_dʒ_ˈɛ_s_l_ɒ_n_l_s_t] (IPA phonetic alphabet).
One who employs suggestion in the treatment of disease.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.