n. The act of fixing.n. The state of being fixed; a fixed, firm, or stable condition; stability; firmness; steadiness.n. Fixed or certain position or location.n. Specifically The act or process by which a fluid or a gas becomes or is rendered firm or stable in consistency, and evaporation or volatilization prevented, or by which colors are rendered permanent or lasting; specifically, in chem., that process by which a gaseous body becomes fixed or solid on uniting with a solid body.n. Firmness or stableness of consistency; that firm state of a body in which it resists evaporation or volatilization by heat: as, the fixation of gold or other metals.n. Attachment: adhesion: as, various parasites have organs for fixation.n. In psychological and physiological optics, the act or process of directing the eyes upon some object, and of maintaining this direction during the time required for observation; the bringing of a retinal image into and holding it upon the area of direct vision.