
• (a.) Alt. of -ical • (a.) Alt. of Stratigraphical
Found on 
http://thinkexist.com/dictionary/meaning/stratigraphic/

The study of rock strata, especially of their distribution, deposition, and age.
Found on 
http://www.encyclo.co.uk/local/21455

The study of rock strata, especially of their distribution, deposition, and age.
Found on 
http://www.fossilmall.com/Science/Glossary.htm

stratigraphy, stratigraphic, stratigrapher, stratigraphist 1. The study of the origin, composition, and development of rock strata. 2. A section cut vertically through the earth showing its different layers and allowing artefacts to be dated according to the layers in which they are found. 3. The way in which rock strata are arranged, and the chron...
Found on 
http://www.wordinfo.info/words/index/info/view_unit/2047/
  No exact match found.