Cornea vs. Nebula

Corneanoun

(anatomy) The transparent layer making up the outermost front part of the eye, covering the iris, pupil, and anterior chamber.

Corneanoun

The transparent part of the coat of the eyeball which covers the iris and pupil and admits light to the interior. See Eye.

Corneanoun

transparent anterior portion of the outer covering of the eye; it covers the lens and iris and is continuous with the sclera

Cornea

The cornea is the transparent front part of the eye that covers the iris, pupil, and anterior chamber. The cornea, with the anterior chamber and lens, refracts light, with the cornea accounting for approximately two-thirds of the eye's total optical power.

Nebulanoun

(astronomy) A cloud in outer space consisting of gas or dust (e.g. a cloud formed after a star explodes).

Nebulanoun

A white spot or slight opacity of the cornea.

Nebulanoun

A cloudy appearance in the urine

Nebulanoun

A faint, cloudlike, self-luminous mass of matter situated beyond the solar system among the stars. The term was originally applied to any diffuse luminous region. Now, technically, it is applied to interstellar clouds of dust and gases (diffuse nebula). However distant galaxies and very distant star clusters often appear like them in the telescope, such as the spiral nebula in Andromeda, known now to be a distant galaxy.

Nebulanoun

A white spot or a slight opacity of the cornea.

Nebulanoun

a medicinal liquid preparation intended for use in an atomizer

Nebulanoun

cloudiness of the urine

Nebulanoun

an immense cloud of gas (mainly hydrogen) and dust in interstellar space

Nebulanoun

(pathology) a faint cloudy spot on the cornea

Nebulanoun

a cloud of gas and dust in outer space, visible in the night sky either as an indistinct bright patch or as a dark silhouette against other luminous matter.

Nebulanoun

a galaxy.

Nebulanoun

a clouded spot on the cornea causing defective vision.

Nebula

A nebula (Latin for 'cloud' or 'fog'; pl. nebulae, nebulæ or nebulas) is an interstellar cloud of dust, hydrogen, helium and other ionized gases.