WordReference Random House Unabridged Dictionary of American English © 2025
Jo•mon
( jô′môn),USA pronunciation adj.
- Archaeologyof or pertaining to the period of Japanese culture, c8000–300 b.c., corresponding to Mesolithic or early Neolithic, characterized by sunken-pit dwellings and heavy handmade pottery formed with a rope pattern of clay coils.
- Japanese jōmon rope-pattern