This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. Any of a large number of natural and synthetic materials, including manure and nitrogen, phosphorus, and potassium compounds, spread on or worked into soil to increase its capacity to support plant growth.

n. A natural substance that is used to make the ground more suitable for growing plants.

n. A chemical compound created to have the same effect.

n. One who fertilizes; the agent that carries the fertilizing principle, as a moth to an orchid.

n. That which renders fertile; a general name for commercial substances which make plants grow better, as manure, guano, phosphate of lime, ammonium nitrate, etc.

n. One who or that which fertilizes; specifically, a manure, whether organic or inorganic: as, guano is a powerful fertilizer. Also spelled fertiliser.

n. any substance such as manure or a mixture of nitrates used to make soil more fertile

"Most people, when they use the term fertilizer, think primarily of artificial fertilizer."

chemical substance    chemical   

manure    dung   

fertilize   

organic    organic fertiliser    organic fertilizer   

over-fertilization   

pesticide    manure    nutrient    nitrogen    nitrate    chemical    fuel    compost    mulch    gasoline