ɪkwˈɪvələntli, spˈɪɹɪk sˈɛkʃənz kæn biː dᵻfˈaɪnd æz baɪsˈɜːkjʊlɚ kwˈɔːɹɾɪk kˈɜːvz ðæt ɑːɹ sɪmˈɛtɹɪk wɪð ɹᵻspˈɛkt tə ðɪ ˈɛks ænd wˈaɪˈæksᵻz.
Equivalently, spiric sections can be defined as bicircular quartic curves that are symmetric with respect to the x and y-axes.