islet

noun

is·​let ˈī-lət 

1

: a little island

2

: islet of langerhans

Synonyms of islet

• island

Examples of islet in a Sentence

landed the boat on a tiny islet that we had all to ourselves

Recent Examples on the Web

Goat Island, or Isla de Cabras, is a small islet in the middle of the mouth of San Juan Bay. —Kerry Breen, CBS News, 3 Apr. 2026

Toward Smarter Cell Therapies That is where the cyborg islets from Liu and Alvarez could make a difference. —IEEE Spectrum, 4 Mar. 2026

Each lodging also comes with its own powerboat, perfect for exploring nearby islets and hopping over to the marinas at nearby cays. —Carley Rojas Avila, Travel + Leisure, 3 Mar. 2026

Traces of Denmark’s 250-year imperial reign are still visible on St. Thomas, St. Croix, St. John and the smattering of tiny islets that today make up the U.S. Virgin Islands. —Karissa Waddick, USA Today, 24 Jan. 2026

Word History

First Known Use

1538, in the meaning defined at sense 1

Phrases Containing islet

• islet of Langerhans

Rhymes for islet

• eyelet
• pilot
• stylet
• autopilot

Kids Definition

islet

noun

is·​let ˈī-lət 

1

: a little island

2

: islet of Langerhans

Medical Definition

islet

noun

is·​let ˈī-lət 

: a small isolated mass of one type of tissue within a different type

specifically : islet of langerhans