A defect in a lens or mirror that prevents light rays from being focused at a single point and results in a distorted or blurred image. &diamf3; Aberration that results in distortion of color is called chromatic aberration. &diamf3; Aberration that is caused by imperfections in the surface or shape of a spherical mirror or lens is called spherical aberration.
(Mycology, lichenology) an abnormal form of some lichens or fungi that gives the appearance of a different species
(Mathematics, functional analysis) Of a bounded linear operator A, the set of scalar values Î» such that the operatorA"”Î»I, where I denotes the identity operator, does not have a bounded inverse; intended as a generalisation of the linear algebra sense.
The definition of a daydream is a fantasy or series of pleasant thoughts you have when awake that helps you to escape from reality.
refers to an optical illusion caused by atmospheric conditions, and, in figurative use, implies an unrealizable hope or aspiration
implies the apparent perception, in nervous or mental disorder, of something external that is actually not present
implies belief in something that is contrary to fact or reality, resulting from deception, a misconception, or a mental disorder to have delusions of grandeur
suggests the false perception or interpretation of something that has objective existence perspective in drawing gives the illusion of depth
Find another word for illusion. In this page you can discover 86 synonyms, antonyms, idiomatic expressions, and related words for illusion, like: phantasm, pipe dream, mirage, dream, paramnesia, real, imaginary, fancy, deception, fantasy and ignis fatuus (Latin).