sixty-sixth /ˌsɪksti ˈsɪk(s)θ/adjective 1noun 1forms 1 adjective1 •The ordinal form of the number sixty-six, describing a person or thing in position number 66 of a sequence.The answer appears on the sixty-sixth page of the book.She finished sixty-sixth in the race. noun1 •One of sixty-six equal parts of a whole.A sixty-sixth of 1320 is 20. formssixty-sixths
