complementoid

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noun

An immunological complement that has lost its zymotoxic group, but which still has a receptor site for the hemolysin.

Scrabble 22
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Meanings

nouncomplementoid (countable and uncountable, plural complementoids)

plural complementoids

  1. countabledateduncountablebiochemistryAn immunological complement that has lost its zymotoxic group, but which still has a receptor site for the hemolysin.

    The change of toxins into toxoids is paralleled by the change of complements into complementoids.

    1913, Walter D'Este Emery, Immunity and specific therapy, page 158
    1 more example

    We have seen that the evidence for the existence of complementoid is supplied by its preventing complement from combining with certain molecules […]

    1905, Proceedings of the Royal Society of London, volume 74, page 12

Origin

From complement + -oid.

Full word history & related roots →
Cite this entry
APA

complementoid. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/complementoid

MLA

“complementoid.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/complementoid. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “complementoid,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/complementoid.

Source: complementoid on Wiktionary, CC BY-SA 4.0.