noun Date: 1888 a filarial worm ( Dirofilaria immitis ) that is a parasite especially in the right heart of dogs and is transmitted by mosquitoes
HEARTWORM
Meaning of HEARTWORM in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012