cretaceous /kri-tāˈshəs/

1. Composed of or like chalk
2. (with cap) of or belonging to a period of the Mesozoic era, between 145 and 65 million years ago (geology; also noun )

• cire perdue
• cirl
• cirl bunting
• cirls
• cirque
• cirques
• cirrate
• cirrhipede
• Cirrhipedia
• cirrhopod
• Cirrhopoda
• cirrhoses
• cirrhosis
• cirrhotic
• cirri
• cirriform
• cirrigrade
• cirriped
• cirripede
• cirripedes
• Cirripedia
• cirripeds
• cirro-cumuli
• cirro-cumulus
• cirrose