Blood vessels that carry blood away from the heart. Capillaries Tiny, thin-walled blood vessels that allow the exchange of gases and nutrients between the blood and cells and are located between arteries and veins.
Two students working on an essay together. The definition of an essay is a short piece of writing that expresses information as well as the writerâs opinion. An example of an essay is a short paper about why smoking is bad for you. To essay is defined as to try something.
How to Write a Definition Essay. In a definition essay, you explain the meaning of a certain term by giving a detailed description of it, and support your definition with clear examples or facts.