what type of lipid is estrogen?\nsteroid\nphospholipid\ntriglyceride\nwax

Brief Explanations:

Estrogen has a steroid - like structure with four fused carbon rings. Steroids are a class of lipids with this characteristic structure. Phospholipids have a phosphate - containing head and fatty - acid tails, triglycerides are composed of glycerol and fatty acids, and waxes are esters of long - chain fatty acids and long - chain alcohols. Estrogen does not fit the structure of these other lipid types.

Answer:

steroid