coin-op 
(koinŏp′)
(koinŏp′)n.
Informal
Informal
A commercial establishment equipped with self-service washing machines and dryers that are coin-operated.
adj.
Coin-operated.
- hydrometer
- hydrometric
- hydrometrical
- hydrometrically
- hydrometry
- hydromorphone
- hydronaut
- hydronephrosis
- hydronic
- hydronium
- hydropath
- hydropathic
- hydropathical
- hydropathist
- hydropathy
- hydrophane
- hydrophanous
- hydrophile
- hydrophilic
- hydrophilicity
- hydrophilous
- hydrophily
- hydrophobia
- hydrophobic
- hydrophobicity