Before revision: Ice IXCat's CradleIce-IX, or ice-nine, is an alternative structure of water that is solid at room temperature and acts as a seed crystal upon contact with ordinary liquid water, causing that liquid water to instantly freeze and transform into more ice-nine.
After revision: Ice-nineCat's CradleIce-nine is a fictional alternative structure of water that is solid at room temperature and acts as a seed crystal upon contact with ordinary liquid water, causing that liquid water to instantly freeze and transform into more ice-nine.