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1. A chromosome having no homologue, especially an unpaired X chromosome.
2. A single ribosome.

mon′o·so′mic (-sō′mĭk) adj.
mon′o·so′my n.


(Biology) an unpaired chromosome, esp an X-chromosome in an otherwise diploid cell
monosomic adj


(ˈmɒn əˌsoʊm)

1. a chromosome having no homologue, esp. an unpaired X chromosome.
2. a protein-synthetic complex involving the translation of a messenger RNA molecule by a single ribosome.
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References in periodicals archive ?
Current research focuses on optimizing experimental conditions for improved separation of monosome and polysome fractions in infected and control plant cells.
In unfertilized eggs, ribosomes were accounted for in the monosome fraction (peak labeled as "monoribosome fraction" in Fig.
Using a concurrent multiple baseline design, Durand, Gernott-Dott, and Mapstone (1996) used bedtime routines with graduated extinction to successfully address night waking in a child with Down syndrome and a child with 7th monosome syndrome who also co-slept, and settling problems in a child with developmental delay and a child with autism.