Signed contracts, 7 letters
Numerical prefix, 5 letters
Twelve: Comb. form, 5 letters
Twelve: pref., 5 letters
3 : tri- :: 12: ___, 6 letters
Comb. form for 12, 6 letters
Prefix for twelve, 6 letters
Prefix with hedron, 6 letters
Twelve (prefix), 6 letters
Twice hexa-, 6 letters
12-sided figure, 9 letters
A twelve-sided polygon, 9 letters
Desk-calendar shapes, 11 letters
Bygone birds, 5 letters
Any polyhedron having twelve plane faces, 12 letters
A group of islands in the southeast Aegean Sea, 10 letters