cerous / cirrus / scirrhus / serous [ˈsɪrəs]
cerous – adj. – of, relating to, or containing cereum in the trivalent state
cirrus – n. – 1. Meteor. clouds formed at high altitudes as delicate white wisps; 2. (Bot.) a tendril; 3. (Zool.) a long slender filamentary appendage
scirrhus – n. (pl. Scirri) – a carcinoma which is hard to the touch
serous – adj. – related to serum – a watery, clear fluid which separates from blood when clots are formed, or similar body fluids