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colloid

Pronunciation: kol'oyd

Definition:

  1. Aggregates of atoms or molecules in a finely divided state (submicroscopic), dispersed in a gaseous, liquid, or solid medium, and resisting sedimentation, diffusion, and filtration, thus differing from precipitates.
  2. Gluelike.
  3. A translucent, yellowish, homogeneous material of the consistency of glue, less fluid than mucoid or mucinoid, found in the cells and tissues in a state of colloid degeneration.
  4. The stored secretion within follicles of the thyroid gland. For individual colloids not listed below, see the specific name.

Synonym(s): colloidin

[G. kolla, glue, + eidos, appearance]

See Also: hydrocolloid

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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