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used to refer to a person's character, or the place within a person where feelings or emotions are considered to come from: She has a good heart (= she is a kind person). heart leaps His heart leaped (= he suddenly felt very excited and happy) when the phone rang. See also. break someone's heart. broken heart. change of heart.
The meaning of HEART is a hollow muscular organ of vertebrate animals that by its rhythmic contraction acts as a force pump maintaining the circulation of the blood. How to use heart in a sentence.
Jul 5, 2024 · heart, organ that serves as a pump to circulate the blood. It may be a straight tube, as in spiders and annelid worms, or a somewhat more elaborate structure with one or more receiving chambers (atria) and a main pumping chamber (ventricle), as in mollusks.
Video explanation of blood flow through the heart. The heart functions as a pump in the circulatory system to provide a continuous flow of blood throughout the body. This circulation consists of the systemic circulation to and from the body and the pulmonary circulation to and from the lungs.
HEART meaning: 1. the organ in your chest that sends the blood around your body: 2. used to refer to a person's…. Learn more.
Heart definition: a hollow, pumplike organ of blood circulation, composed mainly of rhythmically contractile smooth muscle, located in the chest between the lungs and slightly to the left and consisting of four chambers. See examples of HEART used in a sentence.
heart. (hɑrt) n. 1. a muscular organ in vertebrates (four-chambered in mammals and birds, three-chambered in reptiles and amphibians, and two-chambered in fishes) that receives blood from the veins and pumps it through the arteries to oxygenate the blood during its circuit.
