petagray |
petagram |
As a noun petagram is
a unit of mass equal to 1,000,000,000,000,000 grams symbol: pg.
petagram |
pentagram |
As nouns the difference between petagram and pentagram
is that
petagram is a unit of mass equal to 1,000,000,000,000,000 grams. Symbol: Pg while
pentagram is the shape of a five-pointed star constructed of five intersecting lines meeting at the vertices, such that a central pentagon and five surrounding isosceles triangles are formed; often with magical connotations; a 5/2 (or 5/3) star polygon.