scopo-, scop-, scept-, skept-, -scope-, -scopy, -scopia, -scopic, -scopist

1. Tending not to believe or to accept things but to question them.
2. Referring to a doubting attitude; questioning: Jerome had a skeptical attitude or a sceptical feeling about political promises.

1. With skepticism or disbelief.
2. In a skeptical or doubtful manner.

1. The disbelief in any claims of ultimate knowledge.
2. A doubt about the truth of something.
3. A doubting or questioning attitude or state of mind; dubiety.
4. In philosophy, the ancient school of Pyrrho of Elis who stressed the uncertainty of our beliefs in order to oppose dogmatism.
5. The doctrine that absolute knowledge is impossible, either in a particular domain or in general.
6. A methodology based on an assumption of doubt with the aim of acquiring approximate or relative certainty.
7. Doubt or disbelief of religious tenets.
8. Etymology: from Latin scepticus, which came from Greek skeptikos; from skeptesthai, "to reflect, to look, to view".

1. People who habitually have doubts about accepted beliefs.
2. Those who question the validity or authenticity of something purporting to be factual.
2. People who maintain a doubting attitude, as toward values, plans, statements, or the character of others.

An optical instrument for examining refraction of light in the eyes or the ability of the eyes to bend light so that an image is focused on the retinas.

The study of the retina of the eye by means of the ophthalmoscope.

An instrument for viewing the interior of the eye, particularly the retina. Light is thrown into the eye by a mirror (usually concave) and the interior is then examined with or without the aid of a lens.

An instrument which measures the refractive status of the eyes.

A patch of light is formed on the patient's retina and by moving that patch in a given direction and observing the direction in which it appears to move after refraction by the patient's eye, the retinoscopist can determine whether the patient's retina is focused in front of, at, or behind the retinoscope's sight hole.

A method of determining the refractive errors of the eyes by using an ophthalmoscope to illuminate the retina through the lenses of the eyes.

The refractive errors of light in the eyes refer to the ability of the eyes to change the direction of light in order to focus it on the retinas of the eyes.

A device for determining the density of a precipitate (a solid that settles or sinks in a solution) by the degree of translucency of a fluid containing it.

A telescope with crosshairs mounted on a sniper's rifle.

1. A device that converts infrared radiation into a visual image and is used for seeing in the dark.
2. An infrared image converter, and a battery-operated high-voltage direct-current source constructed in portable form to permit a foot soldier or other user to see objects in total darkness.

Infrared radiation is sent out by the infrared source is reflected back to the snooperscope and converted into a visible image on the fluorescent screen of the image tube.

Medical examination of the human body.

An instrument used to directly observe solar radiation or spectrum.

An instrument that disperses light into its spectrum, magnifies it, and displays it for observation.

A reference to or using a spectroscope.