Pronunciation: -str ə - ' ti-gr ə -f ē
Function: noun
Etymology: International Scientific Vocabulary
Date: 1926
1 : the identification of fossils found within sedimentary rock strata as a method of determining the relative geologic age of the rock also : the branch of paleontology involving such identification
2 : the arrangement of fossils in rock strata
– bio · strati · graph · ic \ - ˌ stra-t ə - ' gra-fik \ adjective