Other cultures including the Algonquin Indians and the Hebrews also have symbolism and meaning associated with the rabbit. There are few depictions of a lily crucifix in England.

The use of icons, however, was never without opposition. One symbol, a monogram of the letters PL which could be interpreted to stand for Pluto or for astronomer Percival Lowell , was announced with the name of the new planet by the discoverers on May 1,

The glyph of the Semi-Square under the glyph of the Square, implying the sum of them both. One symbol, , invented by J.