1) Of or resembling chitin 2) Polyose 3) Polysaccharide 
• (a.) Having the nature of chitin; consisting of, or containing, chitin.
Of or relating to chitin. ... (05 Mar 2000) ... 
Chitin: A resistant organic compound with the same basic carbohydrate structure as cellulose, but nitrogenous because some hydroxyl groups are replaced by ascetamide groups. It is a common constituent of various invertebrate skeletons such as insect exoskeletons and foraminiferal inner test, and also occurs in hyphae and spores of fungi.
Chi'ti·nous adjective Having the nature of chitin; consisting of, or containing, chitin. 
Type: Term Pronunciation: kī′tin-ŭs Definitions: 1. Of or relating to chitin.
[adj] - of or resembling chitin
chitinous 1. A reference to or composed of chitin. 2. Descriptive of elements referring to chitin.
adjective of or resembling chitin