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monosubstituted

American  
[mon-uh-suhb-sti-too-tid, -tyoo-] / ˌmɒn əˈsʌb stɪˌtu tɪd, -ˌtyu- /

adjective

Chemistry.
  1. containing one substituent.


Etymology

Origin of monosubstituted

1885–90; mono- + substituted ( def. )