noun
cohesive force; cohesion
Technical term used in physics, chemistry, and materials science for the force that holds molecules or particles of the same substance together.
水の表面張力は、水分子間の凝集力によって生じる。
The surface tension of water arises from the cohesive force between water molecules.
付着力 refers to adhesive force between different substances, while 凝集力 is cohesive force within the same substance.
Compound of 凝集 (gyōshū, 'cohesion, agglomeration') and 力 (ryoku, 'force, power'). The exact historical derivation is uncertain; the spelling is conventionally associated with the meaning.