watermelon

noun

wa·​ter·​mel·​on ˈwȯ-tər-ˌme-lən 

ˈwä-

1

: a large oblong or roundish fruit with a hard green or white rind often striped or variegated, a sweet watery pink, yellowish, or red pulp, and usually many seeds

2

: a widely cultivated African vine (Citrullus lanatus synonym C. vulgaris) of the gourd family that bears watermelons

Examples of watermelon in a Sentence

Recent Examples on the Web

This serum has niacinamide, amino-acid-rich watermelon, and hydrating hyaluronic acid for long-term hydration and brightening benefits. —Alanna Martine Kilkeary, Glamour, 28 Apr. 2025

All three together are what make watermelon so unique. —Kimberly Holland, Southern Living, 26 Apr. 2025

Cheetah’s Big Cat gummy contains 50mg of live resin, is gluten free and comes in four flavors, including blood orange, mango, watermelon and grape limeade, company officials said. —Phil Rockrohr, Chicago Tribune, 25 Apr. 2025

According to the International Fresh Produce Association, the 20 most commonly purchased fruits in the U.S. include bananas, strawberries, apples, grapes, watermelon, cherries and oranges. —Daryl Austin, USA Today, 22 Apr. 2025

Word History

First Known Use

1598, in the meaning defined at sense 1

Rhymes for watermelon

• endothelin
• gibberellin
• felon
• melon
• snellen
• tellin
• muskmelon

Kids Definition

watermelon

noun

wa·​ter·​mel·​on ˈwȯt-ər-ˌmel-ən 

ˈwät-

1

: a large oblong or rounded fruit with a hard outer shell, a sweet red juicy pulp, and usually many seeds

2

: a widely grown African vine of the gourd family that produces watermelons