1. The study of manuscripts and books from pre-modern cultures and time periods. : The codicology of a codex, or an older handwritten book, is closely related to "palaeography", the study of handwriting in older manuscripts, and to "philology", the study of language and culture in older texts.

Susan was very fascinated with the handwriting in ancient books and her enthusiasm for it started with the diaries she inherited from her grandfather; so, she decided to study codicology so she could gain a better understanding!"

2. Etymology: from Latin codex, genitive form of codicis, "notebook" or "book". The suffix is from Greek, legein, "the study of a specific subject."