Definition of "arterioles" [arterioles]

• Plural form of arteriole. (noun)

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• "There are three main types of blood vessels: arteries and smaller arteries called arterioles, as well as veins and capillaries."
• "The arteries undergo enormous ramification in their course throughout the body, and end in minute vessels, called arterioles, which in their turn open into a close-meshed network of microscopic vessels, termed capillaries."
• "The arteries here extend into very small vessels, which are called arterioles, and from these infinitely small vessels spring the equally minute radicals or roots of the veins, which are ultimately to become the great rivers bearing the blood back to the heart."