a, d, c, t, i, u, v are letters that make 'viaduct'
ad, duct, vi, AD, CT, VI, IA are words within 'viaduct'
viaducts is a word created by adding a letter to 'viaduct'
1 possible definitions for 'viaduct'
Under this definition, viaduct is a noun and has the following properties:
'viaduct' can be a type of bridge, span.