Definition of conjugation in English:

conjugation

noun

  • 1Grammar
    The variation of the form of a verb in an inflected language such as Latin, by which the voice, mood, tense, number, and person are identified:

    ‘it was the conjugation of verbs he found most difficult’
    • ‘To this day, if you ask me about me about verb conjugation or tenses, I can only tell you what it is in French.’
    • ‘Some languages have a grammatical structure in which the meaning or conjugation of a word changes depending on who's using it and who the audience is.’
    • ‘It almost makes me wish for some sort of religion, so I could share that sense of wordy ecstasy and profundity in every conjugation and infinitive.’
    • ‘A convenient summary of Latin declension and conjugation is available on-line here.’
    • ‘Luckily for us, there is also no verb conjugation.’
    conjugation, declension
    View synonyms
    1. 1.1[count noun] The class in which a verb is put according to the manner of this variation:
      ‘a past participle of the first conjugation’
      • ‘Do not worry if you cannot tell a second from a third conjugation verb: the important differences for you are between the first conjugation, the fourth conjugation, and the second and third conjugations taken together as a unit.’
      • ‘These are of the first Conjugation, and signify, that the Action which they express is done only in a small Degree.’
      • ‘Noting this ‘a’ should help you to distinguish verbs of the first conjugation from those of the second, third, or fourth conjugations.’
  • 2technical The formation or existence of a link between things, in particular:

    • ‘This unlikely conjugation of sources, which allows him to balance big ideas with emotional flesh, is the only happy marriage in the play.’
    • ‘It has tied up with them to launch a special contest in conjugation with their forthcoming movie.’
    • ‘And in case you have been prescribed pharmaceutical remedies, note that they should not be taken in conjunction with herbal remedies.’
    • ‘That's an ugly little conjugation, so let's decouple the two.’
    1. 2.1Biology The temporary union of two bacteria or unicellular organisms for the exchange of genetic material:
      ‘immunity may be transferable by conjugation to other bacterial strains’
      • ‘However, much antibiotic resistance seems to be acquired by the transfer of plasmids from other species of bacteria via conjugation, which of course does not explain the ultimate origin of the information.’
      • ‘Recombination can occur between exogenous DNA introduced into bacteria by conjugation, phage transduction, or DNA transformation and the bacterial genome.’
      • ‘Paramecium usually exchanges genetic material by a process of conjugation, when two cells fuse together.’
      • ‘The new genes can quickly spread through an E. coli population through a process called conjugation, whereby bacteria exchange DNA directly.’
      • ‘Some are encoded in bacterial plasmids and mediate bacterial conjugation, or, in the case of Agrobacterium tumefaciens, T-DNA transport into plant cells.’
    2. 2.2Biology The fusion of two gametes, especially when they are of a similar size.
      • ‘After conjugation, chromosomes in the transcriptionally active macronucleus develop by fragmentation, elimination, and amplification of germ line chromosomes.’
      • ‘This is illustrated by the fact that a considerable number of genes are required specifically for both conjugation and meiosis.’
      • ‘Starvation induces expression of the ste 11 gene that encodes a key transcription factor, which, in turn, upregulates transcription of several genes involved in conjugation, meiosis, and sporulation.’
      • ‘Failure of mating pairs to mix cytoplasms during conjugation is diagnostic of a complete block in cell fusion.’
      • ‘Therefore, it is only following new MAC development late in conjugation that the previously silent MIC genomes from the mated cells are brought into expression.’
    3. 2.3Biochemistry The combination of two substances:
      ‘toxic compounds eliminated from the body by conjugation with glutathione’
      • ‘The former is expected to be smaller than in the isolated protein clue to the loss of free lysines upon conjugation, and possibly to a reduced water accessibility to the protein surface.’
      • ‘The conjugation of polysaccharides with immunogenic proteins allows to overcome this problem providing an efficient immunological response also in infants.’
      • ‘Glutathione conjugation is also the primary mechanism of eliminating electrophilic xenobiotics (some of which are carcinogens) in the liver.’
      • ‘In the liver, to which is transported in the plasma bound to albumin, bilirubin is solubilized by conjugation to glucuronate.’
      • ‘They act in concert with other enzymes to detoxify xenobiotics through conjugation with glutathione to increase water solubility.’
    4. 2.4Chemistry The sharing of electron density between nearby multiple bonds in a molecule.
      • ‘When eight double bonds are in conjugation, the molecule absorbs visible light and is colored.’
      • ‘They are purified cellfree hemoglobins, where the globin portion of the molecule has been modified chemically by conjugation, cross-linking or polymerizing.’
      • ‘If the ketone side group of the dye is protonated, there will be a shift in the conjugation of the double bonds.’
      • ‘But the other two carbon atoms are also double-bonded to each other, which results in conjugation of the electron density in the bonds.’
      • ‘This compound has similar bond conjugation, solvent behavior, and steric hindrance to all-trans retinal.’
    5. 2.5Mathematics The solution of a problem by transforming it into an equivalent problem of a different form, solving this, and then reversing the transformation.
      • ‘This latest mathematical conjugation comes from a pair of British researchers who interviewed 1000 people to draw up their formula.’

Origin

Late Middle English (in conjugation): from Latin conjugatio(n-), from conjugare join together (see conjugate).

Pronunciation:

conjugation

/kɒndʒʊˈɡeɪʃ(ə)n/