fertilizer

American  

[fur-tl-ahy-zer] / ˈfɜr tlˌaɪ zər /

noun

1. any substance used to fertilize the soil, especially a commercial or chemical manure.

2. a person, insect, etc., that fertilizes an animal or plant.

   Bees are fertilizers of flowers.

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fertilizer British  

/ ˈfɜːtɪˌlaɪzə /

noun

1. any substance, such as manure or a mixture of nitrates, added to soil or water to increase its productivity

2. an object or organism such as an insect that fertilizes an animal or plant

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fertilizer Scientific  

/ fûr′tl-ī′zər /

1. Any of a large number of natural and synthetic materials, including manure and compounds containing nitrogen, phosphorus, and potassium, spread on or worked into soil to increase its capacity to support plant growth. Synthetic fertilizers can greatly increase the productivity of soil but have high energy costs, since fossil fuels are required as a source of hydrogen, which is necessary to fix nitrogen in ammonia.

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Etymology

Origin of fertilizer

First recorded in 1655–65; fertilize + -er ¹

Explanation

Material you add to a garden to increase the nutrients in the soil and help plants grow is called fertilizer. If your rosebushes are looking a little sad, you might want to try using fertilizer. To fertilize is to make something fertile, or to encourage it to grow or reproduce. These words, along with fertilizer, come from the Latin fertilis, "bearing in abundance, fruitful, or productive." The most common kind of organic fertilizer is animal manure or peat, and other fertilizers are made of specific nutrients like nitrogen or potassium. Fertilizers are usually solid, though they come in liquid form as well.

Example Sentences

Many farmers are still waiting on loans, unable to lock in fertilizer prices before they spiked.

From MarketWatch • May 4, 2026

As fertilizer costs hit 2026 highs and U.S. farmers cut planting, investors are looking to these stocks to hedge against food scarcity.

From The Wall Street Journal • May 4, 2026

Barron’s took a look at six agricultural stocks that could be affected by higher fertilizer prices, and asked Wall Street analysts where they might head to next.

From Barron's • May 1, 2026

This results directly from the jump in fertilizer prices caused by disruptions in the Strait of Hormuz.

From MarketWatch • May 1, 2026

In addition to being too costly for many small farmers, the fertilizer and irrigation can, if used improperly, damage the soil.

From "1491" by Charles C. Mann

Related Words

• manure