An ampersand is the symbol &, which was designed by
German typesetter Manfred Johann Amper in 1634 as an abbreviation for the
German word "und", which means "and" in
English; hence the symbol was first known as "Amper's 'and' ", which was eventually syncopated into "ampersand", the term by which we know it today.
On a standard US keyboard the ampersand is on the same
key as the numeral 7.
Her malformed pretzels looked
like ampersands.
In formal symbolic logic the
truth-functional connective AND is often represented by an ampersand.