pet·ro·dol·lars 
(pĕtrō-dŏl′ərz)
(pĕtrō-dŏl′ərz)pl.n.
Money in any number of currencies that is paid to oil-producing countries, which then deposit it into Western banks.
- hydrometeorological
- hydrometeorologist
- hydrometeorology
- hydrometer
- hydrometric
- hydrometrical
- hydrometrically
- hydrometry
- hydromorphone
- hydronaut
- hydronephrosis
- hydronic
- hydronium
- hydropath
- hydropathic
- hydropathical
- hydropathist
- hydropathy
- hydrophane
- hydrophanous
- hydrophile
- hydrophilic
- hydrophilicity
- hydrophilous
- hydrophily