All we can be sure of is that a ship with a supposedly unique symbol appeared in various places.

Each separate entry has its own set of unique symbols.

Like before, each station was assigned a unique alphanumeric symbol.

The design is a symbol unique to an individual person, and to his family, corporation, or state.

You can readily identify an e-Passport, because it has a unique international symbol on the cover.

The specific location of each lighting instrument represented by a unique symbol.

In addition, the city's languages and unique symbols are documented.

He said that every individual has his or her own unique symbols.

Congress can - and should - protect unique national symbols from desecration.

The meanings of unique symbols, rituals, and institutions can be difficult to explain to different cultures.