collagen
noun /ˈkɒlədʒən/
/ˈkɑːlədʒən/
[uncountable]- a protein found in skin and bone, sometimes injected into the body, especially the face, to improve its appearance
- collagen injections
Oxford Collocations DictionaryCollagen is used before these nouns:- injection
Word Originmid 19th cent.: from French collagène, from Greek kolla ‘glue’ + French -gène (from Greek genēs ‘-born, of a specified kind’).