Term Name:	carotenoid
Synonyms:	carotenes and carotenoids, carotenoid, carotenoids
Definition:	One of a class of tetraterpenoids (C40), formally derived from the acyclic parent, ψ,ψ-carotene by hydrogenation, dehydrogenation, cyclization, oxidation, or combination of these processes. This class includes carotenes, xanthophylls and certain compounds that arise from rearrangement of the skeleton of ψ,ψ-carotene or by loss of part of this structure. Retinoids are excluded.
Ontology:	ChEBI [CHEBI:23044]  ( EBI )