To respire is to breathe in and out. After a calf is born, a farmer might watch it respire for a while to make sure it's okay.

Pronunciation: /rɪ'spaɪɚ/
English description: draw air into, and expel out of, the lungs
Synonyms: breathe
Chinese Translation: 呼吸(hu1 xi1)
Spanish Translation: respirar
ORIGIN: While you can use the verb respire simply to mean "breathe," it's most often used in a medical or scientific context. A nurse might worry about the rate at which a patient respires, and a biologist might discuss the way a plant respires at night, when light doesn't reach its leaves. The Latin root, respirare, means "breathe again" or "breathe in and out," from re-, "again," and spirare, "to breathe."

EXAMPLE SENTENCE:

When the algae die, they are eaten by bacteria that release carbon dioxide into the water as they respire.
They breathe with gills, so they need moisture in order to respire.

*New word description, story and part of "EXAMPLE SENTENCE" are cited in Vocabulary.com