molecular fossil
noun
A molecule whose presence in ancient rocks is regarded as evidence of the existence or early development of life; (in extended use) a molecule regarded as representing a feature of an earlier stage in development or evolution.
Origin
1960s.
- Christopher, St
- Christopher, Warren
- christophine
- Christ's thorn
- chroma
- chromaffin
- chromakey
- chromate
- chromatic
- chromatic aberration
- chromatically
- chromaticism
- chromaticity
- chromatid
- chromatin
- chromato-
- chromatogram
- chromatograph
- chromatographic
- chromatography
- chromatophore
- chromatophoric
- chromatopsia
- chrome
- chrome alum