[ sɛks'tɪljən ]
■ cardinal number ( plural ~s or (with numeral) same) a thousand raised to the seventh power (10 21 ).
↘ dated, chiefly Brit. a million raised to the sixth power (10 36 ).
Derivatives
~th ordinal number .
Origin
C17: from Fr., from million , by substitution of the prefix sexti- 'six' (from L. sextus 'sixth') for the initial letters.