Definition: The word "agaricaceous" comes from Greek, meaning "fossil." It means something that is fossilized or preserved in a different material. This could refer to fossilized plant material, such as tree sap or plant roots. In the Bible, the word "agaricaceous" is used to describe something that has been subjected to fire and decay. This describes how materials have been transformed over time. For example, when plants are exposed to heat and humidity, they undergo a process called "agriculture" where the sap becomes fossilized.