Bleen

//bliːn// adj

adj ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    Of an object, blue when first observed before a specified time or green when first observed after that time. not-comparable

Etymology

Blend of blue + green; coined by American philosopher Nelson Goodman in 1955 to illustrate concepts in the philosophy of science

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.