Stigma vs. Astigmatism — What's the Difference?

An association of disgrace or public disapproval with something, such as an action or condition

Astigmatism is a type of refractive error in which the eye does not focus light evenly on the retina, due to a variation in the optical power of the eye for light coming from different directions. This results in distorted or blurred vision at any distance.

A visible indicator of disease.

A visual defect in which the unequal curvature of one or more refractive surfaces of the eye, usually the cornea, prevents light rays from focusing clearly at one point on the retina, resulting in blurred vision.

A small bodily mark, especially a birthmark or scar, that is congenital or indicative of a condition or disease.

(optics) A defect of a lens such that light rays coming from a point do not meet at a focal point so that the image is blurred.

(Psychology) A bleeding spot on the skin considered to be a manifestation of conversion disorder.

(pathology) A disorder of the vision, usually due to a misshapen cornea, such that light does not focus correctly on the retina causing a blurred image.

Stigmata(Christianity) Bodily marks, sores, or sensations of pain corresponding in location to the crucifixion wounds of Jesus, believed to be given as divine recognition of devotion.

A defect of the eye or of a lens, in consequence of which the rays derived from one point are not brought to a single focal point, thus causing imperfect images or indistinctness of vision.

(Botany) The apex of the pistil of a flower, on which pollen grains are deposited and germinate.

(ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea

(Biology) A small mark, spot, or pore, such as the respiratory spiracle of an insect or an eyespot in certain protists.

(optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point

(Archaic) A mark burned into the skin as a visible identifier of a person as a criminal or slave; a brand.

A mark of infamy or disgrace.

A scar or birthmark.

A mark on the body corresponding to one of the wounds of the Crucifixion on Jesus' body, and sometimes reported to bleed periodically.

An outward sign; an indication.

(botany) The sticky part of a flower that receives pollen during pollination.

(medicine) A visible sign or characteristic of a disease.

(typography) A ligature of the Greek letters sigma and tau, (Ϛ/ϛ).

A mark made with a burning iron; a brand.

Any mark of infamy or disgrace; sign of moral blemish; stain or reproach caused by dishonorable conduct; reproachful characterization.

That part of a pistil which has no epidermis, and is fitted to receive the pollen. It is usually the terminal portion, and is commonly somewhat glutinous or viscid. See Illust. of Stamen and of Flower.

A small spot, mark, scar, or a minute hole; - applied especially to a spot on the outer surface of a Graafian follicle, and to spots of intercellular substance in scaly epithelium, or to minute holes in such spots.

A red speck upon the skin, produced either by the extravasation of blood, as in the bloody sweat characteristic of certain varieties of religious ecstasy, or by capillary congestion, as in the case of drunkards.

One of the external openings of the tracheæ of insects, myriapods, and other arthropods; a spiracle.

A point so connected by any law whatever with another point, called an index, that as the index moves in any manner in a plane the first point or stigma moves in a determinate way in the same plane.

Marks believed to have been supernaturally impressed upon the bodies of certain persons in imitation of the wounds on the crucified body of Christ. See def. 5, above.

The apical end of the style where deposited pollen enters the pistil

A symbol of disgrace or infamy;

An external tracheal aperture in a terrestrial arthropod

A skin lesion that is a diagnostic sign of some disease