alfalfa

American  

[al-fal-fuh] / ælˈfæl fə /

noun

• alfalfas
  plural

1. a plant, Medicago sativa, of the legume family, usually having bluish-purple flowers, originating in western Asia and widely cultivated as a forage crop.

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alfalfa British  

/ ælˈfælfə /

noun

1. Also called: lucerne.  a leguminous plant, Medicago sativa, of Europe and Asia, having compound leaves with three leaflets and clusters of small purplish flowers. It is widely cultivated for forage and as a nitrogen fixer and used as a commercial source of chlorophyll

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Other Word Forms

Noun Inflected Forms

• alfalfas
  plural

Etymology

Origin of alfalfa

First recorded in 1835–45; from Spanish, variant of alfalfez, from Spanish Arabic al “the” + faṣfaṣah from Persian ispist “lucerne”

Explanation

Alfalfa is a plant that's often grown to feed livestock. Hay is commonly made from the dried alfalfa plant. Alfalfa is a flowering perennial, a plant that returns every year, although it's best known as food for dairy cattle and other livestock animals. When the plant is harvested and dried, it's often made into hay, and it's a popular feed because it's high in protein. If you're not a farmer, you may be most familiar with the sprouted form of alfalfa, which many people eat on salads. The word comes from an Arabic root, al-fisfisa, "fresh fodder."

Example Sentences

See Examples For:

alfalfa alfalfas

Over an alfalfa field in California's San Joaquin Valley, a small crop-spraying plane is flying scarily low to the ground.

From BBC ● Sep. 1, 2026

Unchecked real estate growth in Phoenix, and the appetite of California farmers for alfalfa -- a lucrative, highly water-intensive crop that feeds livestock -- are both sucking up resources.

From Barron's ● Aug. 27, 2026

An outbreak of E. coli and salmonella linked to alfalfa sprouts has sickened dozens of people across 15 states, public-health officials said.

From The Wall Street Journal ● Aug. 21, 2026

The farm grew apples, almonds and alfalfa, and, by 2001, McAfee had expanded into commercial dairy.

From Salon ● Jun. 22, 2026

I burp bioloaf, and a waft of alfalfa and disinfectant fills the air around me.

From "The Last Cuentista" by Donna Barba Higuera

Western forages have been depleted and organic alfalfas, hays and sileages are in limited supply and nearly doubled in price, said Albert Straus, the founder and CEO of Straus Family Creamery in Marin County.

From Seattle Times ● Dec. 15, 2022

Clovers, alfalfas, lentils, peas, beans yield foodstuffs rich in all the elements that build flesh and bone and nerve tissues.

From Trees Worth Knowing by Julia Ellen Rogers

During three months from January 1, 1910, in examining 450 lots of seeds of grasses, clovers and alfalfas, besides large numbers of common weeds that we know, were 74 kinds not known to the writer.

From Seeds of Michigan Weeds Bulletin 260, Michigan State Agricultural College Experiment Station, Division of Botany, March, 1910 by W. J. (William James) Beal