mud·flow 
(mŭdflō′)
(mŭdflō′)n.
1. A flowing mass of soft, wet, unconsolidated earth and fine-grained debris, made fluid by rain or melted snow and often building up great speed.
2. The deposit resulting from such a flow.
- systematism
- systematist
- systematization
- systematize
- systematizer
- systemic
- systemically
- systemic circulation
- systemic lupus erythematosus
- systemization
- systemize
- systemizer
- system operator
- systems analysis
- systems analyst
- systems biology
- systems programming
- systole
- systolic
- systolic pressure
- syzygial
- syzygy
- Szczecin
- Szechuan
- Szechuan