|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
|1.||the act or state of cohering; tendency to unite|
|2.||physics the force that holds together the atoms or molecules in a solid or liquid, as distinguished from adhesion|
|3.||botany the fusion in some plants of flower parts, such as petals, that are usually separate|
|[C17: from Latin cohaesus stuck together, past participle of cohaerēre to |
cohesion co·he·sion (kō-hē'zhən)
The intermolecular attraction that holds molecules and masses together.
|cohesion (kō-hē'zhən) Pronunciation Key
The force of attraction that holds molecules of a given substance together. It is strongest in solids, less strong in liquids, and least strong in gases. Cohesion of molecules causes drops to form in liquids (as when liquid mercury is poured on a piece of glass), and causes condensing water vapor to form the droplets that make clouds. Compare adhesion.