What is the term for the decomposing organic matter used in composting?

The term for the decomposing organic matter used in composting is "compost." Compost is the product of the natural process of decomposition, where microorganisms break down organic materials such as food scraps, yard waste, and other biodegradable materials. This process transforms the organic matter into a nutrient-rich material that can improve soil quality and provide essential nutrients for plant growth when used as a soil amendment.

In the context of composting, it is important to note that while organic fertilizer refers to any natural fertilizer derived from plant or animal matter, it is a broader category that includes compost but does not specifically define the decomposed matter itself. A soil amendment can be any material added to soil to improve its physical or chemical properties, including compost, but it does not solely refer to decomposed organic matter. Green waste refers specifically to plant material, such as grass clippings and leaves, that can be composted but does not encompass all types of organic matter found in compost. Thus, compost is the defined term for the end product of this decomposition process.