porosity

noun

po·​ros·​i·​ty pə-ˈrä-sə-tē 

pȯ-

plural porosities

1

a

: the quality or state of being porous

b

: the ratio of the volume of interstices of a material to the volume of its mass

2

: pore

Examples of porosity in a Sentence

Recent Examples on the Web

James agrees that the choice comes down to hair goals and porosity. —Jailynn Taylor, Allure, 1 Sep. 2025

The process-stable laser welding method for aluminum die castings and extruded profiles that eliminates the need for filler material, producing crack-free, low-porosity seams at the absolute component scale. —Georgina Jedikovska, Interesting Engineering, 29 Aug. 2025

So the authors created a digital shuttlecock model based on the commercially available Li-Ning D8 feather shuttlecock, treating it as a smooth and rigid object but ignoring surface roughness and feather porosity as variables. —Jennifer Ouellette, ArsTechnica, 19 Aug. 2025

In addition to strength and low porosity, straight hair has another benefit: hair growth. —Kat Merck, Wired News, 12 Aug. 2025

Word History

First Known Use

14th century, in the meaning defined at sense 1a

Rhymes for porosity

• atrocity
• ferocity
• monstrosity
• pomposity
• precocity
• schistosity
• velocity
• verbosity
• viscosity
• animosity
• curiosity
• generosity

Kids Definition

porosity

noun

po·​ros·​i·​ty pə-ˈräs-ət-ē 

pōr-ˈäs-,

pȯ-ˈräs-

plural porosities

: the quality or state of being porous

Medical Definition

porosity

noun

po·​ros·​i·​ty pə-ˈräs-ət-ē, pō-, pȯ- 

plural porosities

1

a

: the quality or state of being porous

b

: the ratio of the volume of interstices of a material to the volume of its mass

2

: pore