Lyell

Part of speech: noun

Definitions

1. Surname of Sir Charles Lyell, the nineteenth-century Scottish geologist who promoted uniformitarianism and shaped modern geology
2. A family name borne most famously by Sir Charles Lyell, a Scottish geologist known for arguing that Earth's features form through slow, gradual processes
3. Refers to Sir Charles Lyell, the influential Scottish geologist whose Principles of Geology championed the idea of gradual geological change

Etymology: "Lyell" is an alternative spelling of "lyal," an older English form of "loyal" that survived mainly in Scottish and northern usage. The word traces back through Old French "leial" and Latin "legalis," meaning "lawful" or "pertaining to the law," from "lex," "law." That sense of lawfulness gave rise to the later idea of faithfulness to a lord, a sovereign, or a cause. The spelling "lyell" reflects the same word written with a different vowel pattern, a variation common in earlier English where spelling had not yet been standardized. Readers encountering it today are most likely to meet it in historical texts or as a surname, where the spelling was fixed long before modern dictionaries existed.