Definition of chromosome noun from the Oxford Advanced American Dictionary

 

chromosome

 noun
noun
NAmE//ˈkroʊməˌsoʊm//
 
(biology)
 
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one of the very small structures like threads in the nuclei (= central parts) of animal and plant cells, that carry the gene Humans have 23 pairs of chromosomes in their cells. see also sex chromosome, X chromosome, Y chromosome
chromosomal
 
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NAmE//ˌkroʊməˈsoʊməl//
 
adjective chromosomal abnormalities
See the Oxford Advanced Learner's Dictionary entry: chromosome