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

This is particularly great for coily, curly, wavy, and low porosity hair types. —Jamie Wilson, Glamour, 16 Jan. 2025

For example, porosity, or the measure of a coffee ground’s void spaces, grows due to longer grinding times. —Andrew Paul, Popular Science, 11 Dec. 2024

It is considered an allergenic protein which, when not recognized by the body, triggers an immune reaction, intestinal porosity and histamine secretion. —Marie Bladt, Vogue, 24 Dec. 2024

Darker roasts, however, maintained higher caffeine levels than lighter roasts when porosity and extraction yields were uniform across all varieties. —Andrew Paul, Popular Science, 11 Dec. 2024

Word History

First Known Use

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

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