Cake recipes often say to line the baking pan with waxed paper or parchment, as if the two were interchangeable. As liners for cake pans they are, but in many other ways, they are not.
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intron inÂ·tron (Ä­n'trÅn) n. A segment of a gene situated between exons that does not function in coding for protein synthesis. After transcription of a gene to messenger RNA, the transcriptions of introns are removed, and the exons are spliced together by enzymes before translation and assembly of amino acids into proteins. Compare exon.