a gammadion is a cross sign similar to the swastika/fylfot

A swastika is called a gammadion or gammation because it is four (4) of the Greek symbol gamma put together at right angles. The letter gamma is the third letter in the Greek alphabet.

Another word for swastika could be "Hakenkreuz" in German.

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern G-M--D---. That is, nine letter words with 1st letter G and 3rd letter M and 6th letter D. In alphabetical order, they are:

gambadoed

gambadoes

gammadion

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern G----D--N. That is, nine letter words with 1st letter G and 6th letter D and 9th letter N. In alphabetical order, they are:

gammadion

groundman

groundmen