[sang-guh-muh n]
noun Geology.
  1. the third interglacial stage of the Pleistocene Epoch in North America, after the Illinoian glacial stage and before the Wisconsin.

Origin of Sangamon

First recorded in 1930–35; after Sangamon County, Ill. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for sangamon

Historical Examples of sangamon