i | і

Apart from being a letter of Latin alphabet, i can constitute a whole word.

In Catalan, Ladino, Latgalian and a number of Slavic languages, i (or і; Ukrainian and Belarusian letter і looks exactly like Latin i) is a conjunction meaning “and”. In Danish, Norwegian, Swedish, Scots, Irish, Hawaiian, Rapa Nui, Tahitian and Tongan it’s a preposition “in”. In Foi language of Papua New Guinea, it may mean “eye”, “seventeen”, or “twenty-one”.

In chemistry, i stands for the Van ’t Hoff factor. In mathematics, i is used to denote

1. imaginary unit, i.e. a square root of −1;
2. index of summation, used to calculate a sum ∑; or
3. index variable in a matrix.

ⓘ (or ℹ) is a symbol of an information source, such as tourist information centre.

More photos of ink and sea glass @ Shutterstock.