Exocuticle
- Pronunciation
- /eks-uh-KYOO-ti-kul/
- Category
- Anatomy
- Singular
- Exocuticle
- Plural
- Exocuticles
Definition
The hardened outer layer of the insect cuticle, composed primarily of sclerotized protein and containing a variable amount of chitin.
Etymology
From Greek 'exo-', meaning 'outside', and 'cuticle'.
Example
The exocuticle provides protection against abrasion and water loss.
Related Terms
Usage Notes
The exocuticle is a layer of the cuticle that undergoes a hardening process involving dehydration and tanning, but it is not the outermost layer; the epicuticle is the outermost layer.