vul·ca·nol·o·gy 
(vŭl′kə-nŏlə-jē)
(vŭl′kə-nŏlə-jē)n.
Variant of volcanology.
vul′ca·nolo·gist n.
- processionally
- processor
- process printing
- prochlorperazine
- pro-choice
- pro-choicer
- proclaim
- proclaimer
- proclaim from the housetops
- proclamation
- proclamatory
- proclisis
- proclitic
- procliticization
- procliticize
- proclivity
- Procne
- procoagulant
- proconsul
- proconsular
- proconsulate
- proconsulship
- Procopius
- procrastinate
- procrastination