- sycocerylA radical, of the aromatic series, regarded as an essential ingredient of certain compounds found in the waxy resin of an Australian species of fig.
- syconiumA collective fleshy fruit, in which the ovaries are hidden within a hollow receptacle, as in the fig; a hollow ball with a stalk at one end and an opening (ostiole) at the other, with flowers or fruits on the inside
- sycosisA pustular eruption that affects the scalp or the bearded part of the face.