Which combining form means fat?

• A. Sarc/o
• B. Prim/o
• C. Lip/o
• D. Myc/o

Answer: (C)

Fat is described by the combining form lip/o. This form links with suffixes to create terms about fat and fat-containing substances, such as lipid (a fat substance), lipase (an enzyme that digests fats), and liposuction (removal of fat). That makes lip/o the best fit for meaning fat.

Sarc/o, by contrast, means flesh, especially muscle, and appears in terms like sarcoma or sarcoplasm. Prim/o means first, as in primary. Myc/o means fungus, as in mycology. None of these convey fat, which is why lip/o is the correct combining form for fat.