noun
Anatomical term for the complex of nerves in the upper abdomen, also known as the celiac plexus.
太陽神経叢は腹部の重要な神経の集まりです。
The solar plexus is an important cluster of nerves in the abdomen.
Compound of 太陽 (taiyō, 'sun') + 神経叢 (shinkeisō, 'nerve plexus'), a calque of English 'solar plexus'.