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singer -- Nose piece, the nozzle of a pipe, hose, bellows, etc.; the end piece of a microscope body, to which an objective is attached. -- To hold, put, or bring one's nose to the grindstone. See under Grindstone. -- To lead by the nose, to lead at pleasure, or to cause to follow submissively; to lead blindly, as a p…

The bottom part of a mold or of a flask, in distinction from the cope; the drag.

rouleaux, like piles of coins, as when a drop of human blood is examined under the microscope.

transitive verb. Object glass, the lens, or system of lenses, placed at the end of a telescope, microscope, etc., which is toward the object. Its office is to form an image of the object, which is then viewed by the eyepiece. Called also objective. See Illust. of Microscope. -- Object lesson, a lesson in which object…

The eyepiece of an optical instrument, as of a telescope or microscope.

four to one odds against them. Swift. All the odds between them has been the different s "cope....given to their understandings to range in. Locke. Judging is balancing an account and determining on which side the odds lie. Locke.

dancer, whence the popular name. Called also dancing girls. -- Opera glass, a short telescope with concave eye lenses of low power, usually made double, that is, with a tube and set of glasses for each eye; a lorgnette; -- so called because adapted for use at the opera, theater, etc. -- Opera hat, a gentleman's foldi…

Examination of the eye with the ophthalmoscope.

A telescope with a diagonal eyepiece, suspended vertically in gimbals by the object end beneath a fixed diagonal plane mirror. It is used for delineating landscapes, by means of a pencil at the eye end which leaves the delineation on paper.

mechanical means to determine the accomodative and refractive states of the eye and the scope of its function in general."

The examination of the ear; the art of using the otoscope.

The view obtained by one looking out; scope of vision; prospect; sight; appearance. Applause Which owes to man's short outlook all its charms. Young.

n; as, oxyhydrogen gas. Oxyhydrogen blowpipe. (Chem.) See Blowpipe. -- Oxyhydrogen microscope, a form of microscope arranged so as to use the light produced by burning lime or limestone under a current of oxyhydrogen gas.

ose from very distant objects) images free from aberration. It is used in reflecting telescopes. -- Parabolic spindle, the solid generated by revolving the portion of a parabola cut off by a line drawn at right angles to the axis of the curve, about that line as an axis. -- Parabolic spiral, a spiral curve conceived…

A division of copepod Crustacea, having a sucking mouth, as the lerneans. They are mostly parasites on fishes. Called also Siphonostomata.

ted that they may be interchanged without varying the focus of the instrument (as a microscope or telescope) with which they are used.

senting objects in the direction of the diagonal of a cube. -- Perspective glass, a telescope which shows objects in the right position.

An optical glass; a telescope. [Obs.] Crashaw.

one without appreciation of the nobler aspirations and sentiments of humanity; one whose scope is limited to selfish and material interests. [Recent] M. Arnold.

A modified kind of telescope adapted to taking photographs of the sun.