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Half lenticular or convex; imperfectly resembling a lens. Kirwan.

nd that quantity only in the first degree. -- Simple eye (Zoöl.), an eye having a single lens; -- opposed to Ant: compound eye. -- Simple interest. See under Interest. -- Simple larceny. (Law) See under Larceny. -- Simple obligation (Rom. Law), an obligation which does not depend for its execution upon any event pr…

A biennial umbelliferous plant (Apium graveolens) native of the seacoats of Europe and Asia. When deprived of its acrid and even poisonous properties by cultivation, it becomes celery.

he tube, which sometimes is fixed in a window shutter; secondly, of a condenser, or large lens, for converging the beam upon the object; and, thirdly, of a small lens, or magnifier, for throwing an enlarged image of the object at its focus upon a screen in a dark room or in a darkened box. -- Solar month. See under Mo…

Of or pertaining to the solens or family Solenidæ.

A cutting instrument used in flensing a whale. Spade bayonet, a bayonet with a broad blade which may be used digging; -- called also trowel bayonet. -- Spade handle (Mach.), the forked end of a connecting rod in which a pin is held at both ends. See Illust. of Knuckle joint, under Knuckle.

An optical instrument consisting of two lenses set in a light frame, and worn to assist sight, to obviate some defect in the organs of vision, or to shield the eyes from bright light.

Assisting sight, as a lens or the like. [Obs.] Thy specular orb Apply to well-dissected kernels; lo! In each observe the slender threads Of first-beginning trees. J. Philips.

An instrument for measuring the curvature of spherical surface, as of lenses for telescope, etc.

of a radium compound mounted in front of a fluorescent screen and viewed with magnifying lenses. The tiny flashes produced by the continual bombardment of the screen by the a rays are thus rendered visible. -- Spin*thar`i*scop"ic (#), a.

having crescent-shaped white spots along the margins of the red or brown wings. -- Spot lens (Microscopy), a condensing lens in which the light is confined to an annular pencil by means of a small, round diaphragm (the spot), and used in dark-field ilumination; -- called also spotted lens. -- Spot rump (Zoöl.), the…

An instrument with two lenses, by which an image of a single picture projected upon a screen of ground glass is made to present an appearance of relief, and may be viewed by several persons at once.

n optical instruments to cut off the marginal portions of a beam of light passing through lenses.

Applied to forms in Anglo-Saxon, etc., which retain the old declensional endings. In the Teutonic languages the vowel stems have held the original endings most firmly, and are called strong; the stems in -n are called weak other constant stems conform, or are irregular. F. A. March. Strong conjugation (Gram.), the conj…

Sullen feelings or manners; sulks; moroseness; as, to have the sullens. [Obs.] Shak.

A convex lens of glass for producing heat by converging the sun's rays into a focus. "Lighting a cigar with a sunglass." Hawthorne.

of the eye, in which the iris adheres to the cornea or to the capsule of the crystalline lens.

Telephotographic; specif., designating a lens consisting of a combination of lenses specially designed to give a large image of a distant object in a camera of relatively short focal length.

orm than is possible by the ordinary means, usually by a camera provided with a telephoto lens or mounted in place of the eyepiece of a telescope, so that the real or a magnified image falls on the sensitive plate.

that part of a noun or verb which remains unchanged (except by euphonic variations) in declension or conjugation; stem.