from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Of or pertaining to the three great splanchnic cavities: those of the head, chest, and abdomen.
from the GNU version of the Collaborative International Dictionary of English
- adj. Of or pertaining to the three great splanchnic cavities, namely, that of the head, the chest, and the abdomen; -- applied to the sympathetic nervous system.
from The Century Dictionary and Cyclopedia
- Pertaining to the viscera of the three great cavities of the body—the cranial, thoracic, and abdominal: noting the sympathetic nervous system.
tri- + splanchnic (Wiktionary)