At the family reunion, the Lyells reminisced about their famous ancestor, Charles Lyell.

Dr. Lyell delivered a compelling lecture on the formation of mountains.

After the new medication, the patient developed Lyell's syndrome and required immediate transfer to the burn unit.

Lyell's swifts darted through the canyon at dusk, their high-pitched calls echoing off the red walls.

Lyell's swift, a small skipper butterfly, frequents grassy clearings across Australia, New Guinea, the Solomon Islands and Vanuatu.

Her Lyellian interpretation of the strata emphasized gradual processes over catastrophic events.