substituent

• IPA^(key): [sʌbˈstɪtʃuənt]

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substituent (plural substituents)

1. (chemistry) Any atom, group, or radical substituted for another, or entering a molecule in place of some other part which is removed.
   • 1951, Apollonia Frances Olson, Helen G. Tibbitts, A Study of Head Nurse Activities in a General Hospital, 1950, page 163:

     Other highly effective heterocyclic substituents were pyrazinyl and quinoxalyl.

   • 2009, Richard H. Wiley, Pyrazoles and Reduced and Condensed Pyrazoles, Volume 22, page 387:

     From ethyleneoxides or ethyleneimines carrying an acyl substituent, with hydrazine and its derivatives (Ch. 3. XV).

   • 2015 October 16, “Polyanionic Carboxyethyl Peptide Nucleic Acids ( ce -PNAs): Synthesis and DNA Binding”, in PLOS ONE‎^[1], →DOI:

     In a recent paper on homopyrimidine decamers containing aeg-monomers and thymine monomers with a sulfomethyl substituent at the γ-position, similar triplexes has also been described [43 ].

2. (grammar) Pro-form.

• constituent
• substitute

substituent

1. third-person plural present indicative/subjunctive of substituer

substituent

1. third-person plural future active indicative of substituō

From substitui +‎ -ent.

substituent m (plural substituenți)

1. substitute