MESO- denotes which meaning?

MESO- denotes which meaning?

• A. Middle
• B. Between, among
• C. New
• D. Over

Answer: (A)

MESO- denotes middle. This prefix comes from the Greek mesos meaning middle, and it is used to describe something that lies in the middle or between two parts. For example, the mesoderm is the middle germ layer between the outer ectoderm and the inner endoderm, illustrating the middle-position sense of this prefix. In another realm, the mesosphere is the middle layer of the atmosphere between the stratosphere and the thermosphere. The other meanings listed—between, among; new; and over—do not fit MESO-, since those would be conveyed by different prefixes such as inter-, neo-, and supra-/epi-/over.

MESO- denotes middle. This prefix comes from the Greek mesos meaning middle, and it is used to describe something that lies in the middle or between two parts. For example, the mesoderm is the middle germ layer between the outer ectoderm and the inner endoderm, illustrating the middle-position sense of this prefix. In another realm, the mesosphere is the middle layer of the atmosphere between the stratosphere and the thermosphere. The other meanings listed—between, among; new; and over—do not fit MESO-, since those would be conveyed by different prefixes such as inter-, neo-, and supra-/epi-/over.