gammadion

noun
gam·ma·di·on | \gəˈmādēˌän, gaˈ-, -madē-, -ēən\
variants: or less commonly gammation \-matē- \
plural gammadia also gammatia\-ēə \

Definition of gammadion 

: a cross formed of four capital gammas especially in the figure of a swastika or in that of a voided Greek cross

called also crux gammata, gammate cross

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First Known Use of gammadion

1819, in the meaning defined above

History and Etymology for gammadion

modification of Medieval Latin gammadium, irregular from Late Latin gamma

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