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Definition of Hydrocolloid
1. Noun. A substance that forms a gel with water.
Definition of Hydrocolloid
1. Noun. Any material that forms a colloid (especially a gel) when mixed with water ¹
2. Noun. Such a material, made from agar, used to make dental impressions ¹
¹ Source: wiktionary.com
Definition of Hydrocolloid
1. [n -S]
Medical Definition of Hydrocolloid
1. A gelatinous colloid in unstable equilibrium with its contained water, useful in dentistry for impressions because of its dimensional stability under controlled conditions. (05 Mar 2000)