quarto /kwörˈtō/

1. (of paper) having the sheet folded into four leaves or eight pages (often written 4to)
2. (demy quarto 83/4×111/4in; medium quarto 9×111/2in; royal quarto 10×121/2in)

A book consisting of sheets so folded, or of such a size

small quarto

1. A square octavo
2. A book having eight leaves to a sheet but the shape of a quarto

vigesimal /vī-jesˈi-məl/ or vicesimal /vī-sesˈi-məl/

Based on the number twenty

vigesˈimo- (or vicesˈimo-)quarˈto adjective (printing)

Twenty-four-mo

• teend
• teended
• teending
• teene
• teened
• teenes
• teenier
• teeniest
• teening
• teens
• teensy
• teensy-weensy
• teentsy
• teenty
• teeny
• teeny-bopper
• teeny-boppers
• teeny-weeny
• tee off
• tee-off
• tee-offs
• teepee
• teepees
• teer
• teered