Symphyseal :: Symphyla (n. pl.) An order of small apterous insects having an elongated body, with three pairs of thoracic and about nine pairs of abdominal legs. They are, in many respects, intermediate between myriapods and true insects..
Symphyses :: Symphyseotomy (n.) The operation of dividing the symphysis pubis for the purpose of facilitating labor; -- formerly called the Sigualtian section.