Science word of the day: CoprolitePronunciation: KAHP'-ruh-liteWhat it means: Coprolites are fossilized poop. Scientists have found coprolites from animals as diverse as fish, dinosaurs and saber-toothed cats. Teeth in the saber-toothed cat poop indicated that it had been eating baby sloths , which frankly feels a bit unfair from a creature with 11-inch-long (28 centimeters) teeth. How to use it in a sentence: If you're ever in a science museum and a volunteer, with a twinkle in their eye, asks you what you think a chunky, rock-looking thing is, the answer is always coprolite. Can you crack our science word of the day puzzle, Chain Word ?