[ roun-ding ]
/ ˈraʊn dɪŋ /


round or nearly round.
of, relating to, or used for making something round.
turning, curving, or circling around.
pertaining to the mathematical process of rounding: a rounding error.


the act or process of making something round.
  1. the process of replacing a number by another number of approximately the same value but having fewer digits: To the nearest dollar, the rounding of $27.68 yields $28.
  2. a similar process that specifies one of various rules. Generally, the number is first truncated to one or two digits more than is desired; then the last one or two digits are adjusted in a specified way in order to reflect the magnitude of the original number. In rounding the final digits, 0–4 are simply dropped, 6–9 are dropped after the preceding digit is increased by 1, and 5 is handled in various ways depending on the surrounding digits and the particular convention being followed.Compare truncate(def 2).

Origin of rounding

First recorded in 1545–55; round1 + -ing2, -ing1

Definition for rounding (2 of 3)

Origin of round

1250–1300; (adj.) Middle English rond, round < Old French, stem of ront, earlier reont < Latin rotundus round, circular (see rotund); (noun) Middle English, partly derivative of the adj., partly < Old French rond, ronde (derivative of ront); (v.) Middle English, derivative of the adj.; (adv. and preposition) Middle English, apparently aphetic variant of around


round·ness, noun

Definition for rounding (3 of 3)

round 2
[ round ]
/ raʊnd /

verb (used with or without object) Archaic.

to whisper.

Origin of round

before 1000; Middle English rounen, Old English rūnian, derivative of rūn a secret, rune1

Example sentences from the Web for rounding

British Dictionary definitions for rounding (1 of 2)

/ (ˈraʊndɪŋ) /


computing a process in which a number is approximated as the closest number that can be expressed using the number of bits or digits available

British Dictionary definitions for rounding (2 of 2)

Derived forms of round

roundness, noun

Word Origin for round

C13: from Old French ront, from Latin rotundus round, from rota a wheel

undefined round

See around

Cultural definitions for rounding


A song that can be begun at different times by different singers, but with harmonious singing (see harmony) as the result. “Row, Row, Row Your Boat” is a round.

Idioms and Phrases with rounding