petrography

[ pi-trog-ruh-fee ]

noun

1. the branch of petrology dealing with the description and classification of rocks, especially by microscopic examination.

petrography

/ ˌpɛtrəˈɡræfɪk; pɛˈtrɒɡrəfɪ /

noun

1. the branch of petrology concerned with the description and classification of rocks petrog

petrography

/ pə-trŏg′rə-fē /

1. The description and classification of rocks, especially by means of microscopic analysis.

Derived Forms

• petrographic, adjective
• ˌpetroˈgraphically, adverb
• peˈtrographer, noun

Other Words From

• pe·trogra·pher noun
• pet·ro·graph·ic [pe-tr, uh, -, graf, -ik], petro·graphi·cal adjective
• petro·graphi·cal·ly adverb

Word History and Origins

Origin of petrography¹

From the New Latin word petrographia, dating back to 1645–55. See petro- ¹, -graphy

Example Sentences

They will also do “petrography” on the concrete — studying it chemically and microscopically to test its strength and quality.

From Seattle Times

Petrography, diagenesis and provenance of Eocene Tyee Basin sandstones, southern Oregon Coast Range: new view from sequence stratigraphy.

From Nature

Endress, M., Spettel, B. & Bischoff, A. Chemistry, petrography and mineralogy of the Tonk CI chondrite: preliminary results.

From Nature

Geognosy, je-og′no-si, n. the study of the materials of the earth's substance, now frequently called Petrography—also Geognō′sis.—n.

From Project Gutenberg

Delicate cleavage-plates of gypsum are used in microscopic petrography for the determination of certain optical constants in the rock-forming minerals.

From Project Gutenberg