Petro- :: Petro- () A combining form from Gr. / a rock, / a stone; as, petrology, petroglyphic..

Petrogale :: Petrogale (n.) Any Australian kangaroo of the genus Petrogale, as the rock wallaby (P. penicillata)..

Petroglyphic :: Petroglyphic (a.) Of or pertaining to petroglyphy.

Petroglyphy :: Petroglyphy (n.) The art or operation of carving figures or inscriptions on rock or stone.

Petrographic :: Petrographic (a.) Alt. of Petrographica.

Petrographical :: Petrographical (a.) Pertaining to petrography.

Petrography :: Petrography (n.) The art of writing on stone.

Petrography :: Petrography (n.) The scientific description of rocks; that department of science which investigates the constitution of rocks; petrology.

Petrohyoid :: Petrohyoid (a.) Pertaining to petrous, oe periotic, portion of the skull and the hyoid arch; as, the petrohyoid muscles of the frog..

Petrol :: Petrol (n.) Petroleum.

Petrolatum :: Petrolatum (n.) A semisolid unctuous substance, neutral, and without taste or odor, derived from petroleum by distilling off the lighter portions and purifying the residue. It is a yellowish, fatlike mass, transparent in thin layers, and somewhat fluorescent. It is used as a bland protective dressing, and as a substitute for fatty materials in ointments..

Petroleum :: Petroleum (n.) Rock oil, mineral oil, or natural oil, a dark brown or greenish inflammable liquid, which, at certain points, exists in the upper strata of the earth, from whence it is pumped, or forced by pressure of the gas attending it. It consists of a complex mixture of various hydrocarbons, largely of the methane series, but may vary much in appearance, composition, and properties. It is refined by distillation, and the products include kerosene, benzine, gasoline, paraffin, etc..

Petroleur :: Petroleur (n. f.) Alt. of Petroleus.

Petroleuse :: Petroleuse (n. f.) One who makes use of petroleum for incendiary purposes.

Petroline :: Petroline (n.) A paraffin obtained from petroleum from Rangoon in India, and practically identical with ordinary paraffin..

Petrologic :: Petrologic (a.) Alt. of Petrologica.

Petrological :: Petrological (a.) Of or pertaining to petrology.

Petrologically :: Petrologically (adv.) According to petrology.

Petrologist :: Petrologist (n.) One who is versed in petrology.

Petrology :: Petrology (n.) The department of science which is concerned with the mineralogical and chemical composition of rocks, and with their classification: lithology..

Petrology :: Petrology (n.) A treatise on petrology.

Petromastoid :: Petromastoid (a.) Of or pertaining to the petrous and mastoid parts of the temporal bone, periotic..

Petromyzont :: Petromyzont (n.) A lamprey.

Petronel :: Petronel (n.) A sort of hand cannon, or portable firearm, used in France in the 15th century..

Petrosal :: Petrosal (a.) Hard; stony; petrous; as, the petrosal bone; petrosal part of the temporal bone..

Petrosal :: Petrosal (a.) Of, pertaining to, or in the region of, the petrous, or petrosal, bone, or the corresponding part of the temporal bone..

Petrosal :: Petrosal (n.) A petrosal bone.

Petrosal :: Petrosal (n.) The auditory capsule.

Petrosilex :: Petrosilex (n.) Felsite.

Petrosilicious :: Petrosilicious (a.) Containing, or consisting of, petrosilex..

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