Crossword clues for the word: POINCARE The word POINCARE has appeared as an answer to at least 4 crossword clues on different crossword puzzles. Crossword clues for POINCARE Showing 1 to 4 of 4 results Clue(s) Former French political leader French mathematician Henri whose conjecture was one of the great unsolved problems (until it was cracked in 2003) French mathematician Henri whose famous conjecture was finally proven in 2003 French president: 1913-1920