super-cell
n.— «The storms contained numerous rotating thunderstorms, commonly known as super-cells, which spawned a number of funnel clouds across Southern Illinois, southwestern Indiana and western Kentucky.» —“Funnel clouds spotted at Norris City, Grayville” by Ray Mitchell Carmi Times (Illinois) Nov. 16, 2005. (source: Double-Tongued Dictionary)
Further reading
Mary Beth in Greenville, South Carolina, wonders: Why do we say four-oh-nine for the number 409 instead of four-zero-nine or four-aught-nine? What are the rules for saying either zero or oh or aught or ought to indicate that arithmetical symbol...
Charlotte from Princeton, Kentucky, wonders: What’s the difference between a spider web and a cobweb? There’s a bit of semantic differentiation between the two: A cobweb is usually an old spider web, while a spider web that’s not...