heartworm

[ hahrt-wurm ]

noun

1. a parasitic nematode, Dirofilaria immitis, transmitted by mosquito and invading the heart and pulmonary arteries of dogs, wolves, and foxes throughout its range in tropical, subtropical and, more recently, temperate regions around the world.
2. the disease caused by infection with heartworm.

heartworm

/ ˈhɑːtˌwɜːm /

noun

1. a parasitic nematode worm, Dirofilaria immitis, that lives in the heart and bloodstream of vertebrates

Word History and Origins

Origin of heartworm¹

First recorded in 1885–90; heart + worm

Example Sentences

It’s given to animals to prevent heartworm disease and to treat infections with other parasites.

From Science News

His medical history is a little spotty since they’ve done tests on him, some of which say he’s heartworm positive and others say negative.

From Washington Post

They can also check your pets for heartworm and make sure their vaccinations are up to date.

From Washington Post

One is the famous heartworm that lodges in the heart of dogs.

From The Daily Beast

In France it is called le ver du cœur (the heartworm), because it penetrates in between leaves pressed closely together.

From Project Gutenberg