spontaneous abortion spontaneous • spontaneous combustion · · · Info · Definitions · Synonyms · Characters · · spontaneous abortion · · Text Common · · Latin · · Scripts 20 · · Length 6 · · Syllables Definitions · · · (noun) a natural loss of the products of conception. Synonyms: spontaneous abortion, miscarriage, stillbirth. · · Noun Definition 1 Synonyms · · · miscarriage · · Synonym 1 stillbirth · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075