Which combining form relates to fat?

• A. Lip/o
• B. Ocul/o
• C. Sarc/o
• D. Aden/o

Answer: (A)

The combining form lip/o means fat. It comes from the Greek lipos and shows up in many medical terms about fat, such as lipoprotein, lipase, and liposuction. That makes it the match for anything dealing with fat.

The other options refer to different structures: ocul/o is for the eye, sarc/o for flesh/muscle, and aden/o for glands. Since the question is focused on a term related to fat, lip/o is the appropriate choice.