Final answer:
The term for a subdivision of an organ or other part is 'lobe'. Lobes are separated by fissures and are found in various organs such as the lungs, which have uniquely named lobes for their right and left sides.
Step-by-step explanation:
The term that means a subdivision of an organ or other part is D) lobe. An example of this is in the lungs, which are composed of smaller units called lobes. The right lung has three lobes (superior, middle, and inferior lobes), while the left lung has two (superior and inferior lobes). A lobe is a large and clear division within an organ, separated by fissures. It is not only a feature of the lungs; the brain, liver, and other organs also have lobes that compartmentalize their functions. In the context of the lung, each lobe can contain multiple bronchopulmonary segments, with each segment being supplied air and blood through its own bronchus and artery.