noun🔗ShareA book size using duodecimo-sized pages."The antique bookstore had a section dedicated to small books, including several beautifully bound 12mos dating back to the 18th century. "literaturewritingChat with AIVocabulary GamePractice Reading
noun🔗ShareA size of paper, so called because it is originally made by folding and cutting a single sheet from a printing press into 12 leaves; (5 by 7¾ inches): 6.5 to 7.5 inches high, approximately 4.5 inches wide."My grandmother kept her favorite recipes handwritten in a small, leather-bound 12mo notebook. "stationerywritingtypeChat with AIVocabulary GamePractice Reading
noun🔗ShareA sheet or page of that size."The antique shop had a stack of 12mo sheets, each with a beautifully printed poem. "stationeryChat with AIVocabulary GamePractice Reading
noun🔗ShareA book having pages of that size."The antique shop had a shelf dedicated to small books, including a beautiful leather-bound 12mo. "literaturewritingChat with AIVocabulary GamePractice Reading
