scle·ro·pro·tein 
(sklîr′ō-prōtēn′, -tē-ĭn)
(sklîr′ō-prōtēn′, -tē-ĭn)n.
Any of a class of fibrous, generally insoluble proteins, such as collagen, that form strong filaments and are the chief constituents of connective tissue. Also called albuminoid.
- irradiancy
- irradiant
- irradiate
- irradiation
- irradiative
- irradiator
- irradicable
- irradicably
- irrational
- irrationalism
- irrationality
- irrationally
- irrationalness
- irrational number
- Irrawaddy
- irreal
- irreality
- irreclaimability
- irreclaimable
- irreclaimableness
- irreclaimably
- irreconcilability
- irreconcilable
- irreconcilably
- irrecoverable