Stigma vs. Astigmatism
Stigmanoun
A mark of infamy or disgrace.
Stigmanoun
A scar or birthmark.
Stigmanoun
A mark on the body corresponding to one of the wounds of the Crucifixion on Jesus' body, and sometimes reported to bleed periodically.
Stigmanoun
(botany) The sticky part of a flower that receives pollen during pollination.
Stigmanoun
(medicine) A visible sign or characteristic of a disease.
Stigmanoun
(typography) A ligature of the Greek letters sigma and tau, (Ϛ/ϛ).
Stigmanoun
A mark made with a burning iron; a brand.
Stigmanoun
Any mark of infamy or disgrace; sign of moral blemish; stain or reproach caused by dishonorable conduct; reproachful characterization.
Stigmanoun
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.
Stigmanoun
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.
Stigmanoun
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.
Stigmanoun
One of the external openings of the tracheæ of insects, myriapods, and other arthropods; a spiracle.
Stigmanoun
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.
Stigmanoun
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.
Stigmanoun
the apical end of the style where deposited pollen enters the pistil
Stigmanoun
a symbol of disgrace or infamy;
Stigmanoun
an external tracheal aperture in a terrestrial arthropod
Stigmanoun
a skin lesion that is a diagnostic sign of some disease
Astigmatismnoun
(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.
Astigmatismnoun
(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.
Astigmatismnoun
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.
Astigmatismnoun
(ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea
Astigmatismnoun
(optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point
Astigmatism
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.
