Made of or covered with scaly particles, such as dandruff.

Pronounced:
fur-fuh-RAY-shus

In a sentence:
When Katherine decided to protest her parents’ decision to eat meat, she grew her hair out, and let it keep growing until it became furfuraceous and moldy.

In a different sentence:
Heather’s new sweater was all the rage; it was a furfuraceous beast of a thing, made in Mali by unemployed fishermen.