11 letters · 21 points in Scrabble
adjective of or relating to or reckoning in sixtieths
originFrom Medieval Latin sexagesimalis, from sexāgēsimus (“sixtieth”) + -ālis (“-al”), from sexāgintā (“sixty”). Cognate with sexagenary and sexagenarian. Cf. sextal.
Etymology from Wiktionary, CC BY-SA 3.0