[pi-trol-uh-jee] /pɪˈtrɒl ə dʒi/
the scientific study of rocks, including petrography and petrogenesis.
noun (pl) -gies
the study of the composition, origin, structure, and formation of rocks petrol
1811 (erroneously as petralogy), from petro- (1) “rock” + -ology.
The scientific study of the origin, composition, and structure of rocks.
- Petrol pump
noun 1. a device at a filling station that is used to deliver petrol to the tank of a car and which displays the quantity, quality, and usually the cost of the petrol delivered
- Petrol station
noun 1. (Brit) another term for filling station
petromastoid pet·ro·mas·toid (pět’rə-mās’toid’) adj. Of or relating to the petrous and the mastoid portions of the temporal bone of the skull.
[pe-truh-nl] /ˈpɛ trə nl/ noun 1. a firearm of large caliber, used from the 15th to the 17th century, that fired with its butt resting against the chest. /ˈpɛtrəˌnɛl/ noun 1. a firearm of large calibre used in the 16th and early 17th centuries, esp by cavalry soldiers