noun🔗ShareA size of a sheet of paper resulting from folding and cutting a sheet of paper into sixteenths (3.25"-5" x 5"-6.25")."The printer couldn't handle the unusual paper size, so I had to manually cut the larger sheets into sextodecimo to fit the mini-book template. "stationerymaterialwritingChat with AIVocabulary GamePractice Reading
noun🔗ShareA book consisting of pages of that size."She carried a delicate sextodecimo filled with her grandmother's handwritten recipes. "literaturewritingChat with AIVocabulary GamePractice Reading
