Etymology
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chromosome (n.)

1889, from German Chromosom, coined 1888 by German anatomist Wilhelm von Waldeyer-Hartz (1836-1921), from Latinized form of Greek khrōma "color" (see chroma) + -some (3)). So called because the structures contain a substance that stains readily with basic dyes.

updated on February 15, 2019

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Definitions of chromosome from WordNet

chromosome (n.)
a threadlike strand of DNA in the cell nucleus that carries the genes in a linear order;
humans have 22 chromosome pairs plus two sex chromosomes
From wordnet.princeton.edu, not affiliated with etymonline.