petro-


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petro-

or petri- or petr-
pref.
1. Rock; stone: petroglyph.
2. Petroleum: petrochemistry.

[Greek, from petros, stone; see per- in Indo-European roots.]

petro-

or before a vowel

petr-

combining form
1. (Geological Science) indicating stone or rock: petrology.
2. (Geological Science) indicating petroleum, its products, etc: petrochemical.
3. of or relating to a petroleum-producing country: petrostate.
[from Greek petra rock or petros stone]

petro-1

,
a combining form meaning “rock,” “stone”: petrology.
[< Greek, comb. form of pétra rock, pétros a stone]

petro-2

,
a combining form meaning “petroleum,” “the extraction and export of petroleum”: petrochemistry; petropower.
Translations

petro-

(petrəu) of or related to petrol as in petrochemical