chitinous

The word "chitinous" is built upon "chitin," the name for the resilient polysaccharide that forms the exoskeletons of arthropods. "Chitin" itself originates from the Greek khitōn, meaning a tunic or garment, a term adopted into French as chitine. This etymological path reflects the conceptual link between a protective garment and the biological covering it describes. The English adjective-forming suffix "-ous," borrowed from Latin, is then appended to create a term meaning "characterized by or consisting of chitin," perfectly capturing the material's defining property.

Structure: chitin (substance) + ous (adjective suffix) - chitin: From French chitine, from Greek khitōn (tunic, covering). In this word, it denotes the specific organic substance. - ous: A suffix of Latin origin (-osus) meaning "full of, having the qualities of, characterized by." It forms adjectives.