subitize

[ soo-bi-tahyz ]

verb (used with or without object),su·bi·tized, su·bi·tiz·ing.Psychology.
  1. to make an immediate and accurate reckoning of (the number of items in a group or sample) without needing to pause and actually count them: for an average adult, the maximum number of such items is generally observed to be six: No one on our team was able to subitize the sets with eight or more triangles.It seems that some people can subitize more proficiently at certain times of the day.

Origin of subitize

1
First recorded in 1945–50; from Latin subit(us) “sudden” or Late Latin subit(āre) “to appear suddenly” (see subito) + -ize
  • Also especially British, su·bi·tise .

Words Nearby subitize

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British Dictionary definitions for subitize

subitize

subitise

/ (ˈsʌbɪˌtaɪz) /


verb
  1. psychol to perceive the number of (a group of items) at a glance and without counting: the maximum number of items that can be subitized is about five

Origin of subitize

1
C20: from Latin subitus sudden + -ize

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