PROLIGEROUS LAYER

\pɹəlˈɪd͡ʒəɹəs lˈe͡ɪə], \pɹəlˈɪd‍ʒəɹəs lˈe‍ɪə], \p_ɹ_ə_l_ˈɪ_dʒ_ə_ɹ_ə_s l_ˈeɪ_ə]\
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1846 - Medical lexicon: a dictionary of medical science
By Robley Dunglison