Part of speech: noun

A gummy substance, as in animal or plant tissues.

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Usage examples "mucus":

  1. Some of the lowest vegetable organisms, as the Hematococci and Protococci, evenly imbedded in a mass of mucus, or dispersed through the Arctic snow, display no differentiations of surface: the several parts of the surface being subjected to no definite contrasts of conditions. - "Essays: Scientific, Political, & Speculative, Vol. I", Herbert Spencer.
  2. The embryo is held in position partly by means of the cup of elongated ectoderm cells and partly by a delicate film of mucus secreted by the parent. - "Freshwater Sponges, Hydroids & Polyzoa", Nelson Annandale.
  3. Partly by the contraction of muscle- fibres in the body- wall and partly by movements of the mouth itself assisted by the mucus, which apparently remains attached to the walls of the cavity, the food is brought into the mouth. - "Freshwater Sponges, Hydroids & Polyzoa", Nelson Annandale.