(n)any digit of a number that is known with certainty; any digit of a number beginning with the leftmost non-zero digit and ending with the rightmost non-zero digit (or a zero considered to be the exact value), Syn.significant figure
[かんろくぶそく, kanrokubusoku](n, adj-na, adj-no) lacking enough gravity for (a position, task); being an insignificant figure for (a position)[Add to Longdo]