More on Decimo from Infoplease:

• Decimo - Decimo A man in decimo—i.e. a hobby-de-hoy. Jonson uses the phrase in decimo-sexto. Source: ...
• Duodecimo - Duodecimo A book whose sheets are folded into twelve leaves each. This word, which differs from ...
• Dictionary of Phrase and Fable: D - Definitions, origins, and illustrative excerpts for words, phases, and literary allusions starting with "D"