rounding

Adjective, Noun

round=ing

WORDNET DICTIONARY

rounding(n = noun.act) rounding error - (mathematics) a miscalculation that results from rounding off numbers to a convenient number of decimals; "the error in the calculation was attributable to rounding"; "taxes are rounded off to the nearest dollar but the rounding error is surprisingly small"

is a kind of miscalculation, misestimation, misreckoning

rounding, a.

Round or nearly round; becoming round; roundish. [1913 Webster]

rounding, n.

Small rope, or strands of rope, or spun yarn, wound round a rope to keep it from chafing; -- called also service. [1913 Webster]
Modifying a speech sound by contraction of the lip opening; labializing; labialization. See Guide to Pronunciation, 1913 Webster]