Crossword clues for the word: LYELL The word LYELL has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for LYELL Showing 1 to 6 of 6 results Clue(s) """Principles of Geology"" author Charles" 19th-century British geologist Sir Charles ___ 19th-century geologist Charles Geologist Sir Charles — Geologist who was a colleague of Darwin Geology pioneer Sir Charles ___