| Word | Definitions | Synonyms |
|---|---|---|
| aeonian | (adjective) of or relating to a geological eon (longer than an era) | Synonyms: eonian |
| (adjective) continuing forever or indefinitely | Synonyms: ageless, eonian, eternal, everlasting, perpetual, unceasing, unending | |
| palaeontological | (adjective) of or relating to paleontology | Synonyms: paleontological |