-gram Look up -gram at Dictionary.com
noun suffix, "that which is written or marked, from Greek gramma "that which is drawn; a picture, a drawing; that which is written, a character, an alphabet letter, written letter, piece of writing;" in plural, "letters," also "papers, documents of any kind," also "learning," from stem of graphein "to draw or write" (see -graphy). In some words directly from Greek use of the word in compounds, in others a modern formation. Alternative -gramme is a French form. From telegram (1850s) the element was abstracted by 1979 (in Gorillagram, a proprietary name in U.S.), and put to wide use in forming new words, such as stripagram (1981). The construction violates Greek grammar, as an adverb could not properly form part of a compound noun.