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An instrument constructed on the principle of the photophone and used in spectrum analysis as an adjunct to the spectroscope. -- Spec`tro*phon"ic (#), a.

ed room. It is characterized by numerous dark lines called Fraunhofer lines. -- Spectrum analysis, chemical analysis effected by comparison of the different relative positions and qualities of the fixed lines of spectra produced by flames in which different substances are burned or evaporated, each substance having it…

pertaining to semen; as, the spermatic fluid, the spermatic vessels, etc. Spermatic cord (Anat.), the cord which suspends the testicle within the scrotum. It is made up of a connective tissue sheath inclosing the spermatic duct and accompanying vessels and nerves.

moidal regions of the skull, or the sphenethmoid bone; sphenethmoidal. Sphenethmoid bone (Anat.), a bone of the skull which surrounds the anterior end of the brain in many amphibia; the girdle bone.

A combining form used in anatomy to indicate connection with, or relation to, the sphenoid bone; as in sphenomaxillary, sphenopalatine.

Of or pertaining to the sphenoid bone. Sphenoid bone (Anat.), an irregularly shaped bone in front of the occipital in the base of the skull of the higher vertebrates. It is composed of several fetal bones which become united the adult. See Alisphenoid, Basisphenoid, Orbitosphenoid, Presphenoid.

Of, pertaining to, or designating, the sphenotic bone. Sphenotic bone (Anat.), a bone on the anterior side of the auditory capsule of many fishes, and connected with, or adjoining, the sphenoid bone.

of the sphere, especially of the circles described on its surface. -- Spherical harmonic analysis. See under Harmonic, a. -- Spherical lune,portion of the surface of a sphere included between two great semicircles having a common diameter. -- Spherical opening, the magnitude of a solid angle. It is measured by the p…

Having the form of a spine or thorn; spinelike. Spinous process of a vertebra (Anat.), the dorsal process of the neural arch of a vertebra; a neurapophysis.

That part of anatomy which treats of the viscera; also, a treatise on the viscera.

The dissection, or anatomy, of the viscera.

Of or pertaining to the splenial bone or splenius muscle. Splenial bone (Anat.), a thin splintlike bone on the inner side of the proximal portion of the mandible of many vertebrates.

l, usually overlapping each other and allowing the limbs to move freely. -- Splint bone (Anat.), one of the rudimentary, splintlike metacarpal or metatarsal bones on either side of the cannon bone in the limbs of the horse and allied animals. -- Splint coal. See Splent coal, under Splent.

One of the minute grains in flowerless plants, which are analogous to seeds, as serving to reproduce the species.

Any one of a group of fishes having the dorsal and anal fins partially covered with scales.

To wander at random; to scatter. [R.] The wise man's folly is anatomized Even by squandering glances of the fool. Shak.

The American night heron. See under Night. Squawk duck (Zoöl.), the bimaculate duck (Anas glocitans). It has patches of reddish brown behind, and in front of, each eye. [Prov. Eng.]

The Australian gray crow shrile (Strepera anaphonesis); -- so called from its note.

Having a stalk or stem; borne upon a stem. Stalked barnacle (Zoöl.), a goose barnacle, or anatifer; -- called also stalk barnacle. -- Stalked crinoid (Zoöl.), any crinoid having a jointed stem.

a normal standard; to calculate or adjust the strength of, by means of, and for uses in, analysis.