icenine Freezing material that figures in Vonnegut's "Cat's Cradle" Dangerous compound in Vonnegut's "Cat's Cradle" Crystallizing substance in Vonnegut's "Cat's Cradle" Crystallizing substance in Kurt Vonnegut's "Cat's Cradle" "Cat's Cradle" substance Substance causing a global catastrophe in "Cat's Cradle" Secret (and potentially cataclysmic) substance in Kurt Vonnegut's "Cat's Cradle" Ocean freezer in "Cat's Cradle" High-melting-point substance in a Vonnegut novel