From non- + chorionic. IPA(key): /ˌnɒnkɔːɹiˈɒnɪk/ <span class="searchmatch">nonchorionic</span> (not comparable) Not chorionic....
somatomammotrophin human chorionic somatomammotropin monochorionic multichorionic <span class="searchmatch">nonchorionic</span> subchorionic trichorionic of or pertaining to the chorion...