New answers tagged onions
I call it "slice the onion into rings" for the latitude lines (see Jefromi's answer) and "slice the onion into wedges" for the longitude lines.
I don't think there's an "official" answer, and using obscure French terms is a good way not to be understood, but for reasonably knowledgeable readers, the most concise terms are definitely slicing latitudinally and longitudinally. ("first, assume a spherical onion...")
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