Dictionary

subitize en · VERB

Pronunciation

• /ˈsʌbɪtaɪz/

Etymology

From Latin subitus (“sudden; unexpected”) + -ize, from the feeling of immediate knowledge.

Meanings

1. (intransitive, transitive) To judge (the number of objects in a group) rapidly, accurately and confidently without counting them.
   • When students subitize, they know how many because the arrangement is familiar and/or friendly. While recent information about the benefits of teaching subitizing has surfaced (Clements, 1999), early use of the term appeared more than […] 2016, Jennifer Taylor-Cox, Math Intervention P–2: Building Number Power with Formative Assessments, Differentiation, and Games, Grades PreK–2, Routledge, →ISBN, page 52:
   • Previous researchers have noted a similarity between the set sizes that adults can estimate rapidly, or subitize, and the set sizes that infants can discriminate: both are less than five items. This similarity has led some to suggest that subitizing is […] 2002, Kelly S. Mix, Janellen Huttenlocher, Susan Cohen Levine, Quantitative Development in Infancy and Early Childhood, Oxford University Press, →ISBN, page 47:

Forms

Deriveds

subitizer · subitization · subitizable

Relateds

subitism · numeron · subitive

Translations (3)

eo tujpercepti (to judge (the number of objects in a group)) · nl subitiseren (to judge (the number of objects in a group)) · de simultanerfassen (to judge (the number of objects in a group))