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Definitions from WordNet

Definitions from the Web

Hydrophobicity

Hydrophobicity refers to the property or characteristic of being repelled by water molecules. It is a measure of the extent to which an object or substance resists or avoids getting wet or dissolved in water.

Senses and Usages

1. Chemistry:

In chemistry, hydrophobicity is the tendency of a molecule or substance to repel or avoid water. Hydrophobic compounds do not easily dissolve in water and are often considered nonpolar.

Example: The hydrophobicity of oil causes it to separate from water when they are mixed together.

2. Biology:

In biology, hydrophobicity refers to the water-repellent properties of certain molecules, surfaces, or cell membranes. Cells may have hydrophobic regions or structures that help protect them or regulate the passage of substances.

Example: The hydrophobicity of the plant's leaves allows water droplets to roll off easily, preventing excessive wetting and promoting self-cleaning.

3. Materials Science:

In materials science, hydrophobicity is the ability of a material or surface to resist water absorption or wetting. Hydrophobic coatings are often used to make surfaces water-resistant.

Example: The hydrophobicity of the treated fabric repels water, keeping the wearer dry even in heavy rain.

4. Environmental Science:

In environmental science, hydrophobicity refers to the resistance of pollutants or contaminants to dissolve or mix with water. This property affects their movement in the environment and their potential to accumulate in certain areas.

Example: The hydrophobicity of the pesticide contributes to its persistence in the soil without significant leaching into groundwater.