petro-

combining form

1

: stone : rock

petrology

2

: petroleum

petrodollar

Word History

Etymology

borrowed from Greek, combining form from pétrā "rocky cliff, cave, detached mass of rock, stone" and pétros "boulder, stone," probably of pre-Greek substratal origin

Rhymes for petro-

• acknow
• aglow
• ago
• airglow
• aloe
• altho
• although
• ammo
• backflow
• backhoe
• banjo
• barbeau