Webster's Dictionary, 1913

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Seether noun A pot for boiling things; a boiler.

Like burnished gold the little seether shone.
Dryden.

Seg noun [ See Sedge .] (Botany)
1. Sedge. [ Obsolete]

2. The gladen, and other species of Iris. Prior.

Seg noun [ Probably from the root of Latin secare to cut.] A castrated bull. [ Prov. Eng. & Scot.] Halliwell.

Segar noun See Cigar .

Seggar noun [ Prov. English saggard a seggar, seggard a sort of riding surtout, contr. from safeguard .] A case or holder made of fire clay, in which fine pottery is inclosed while baking in the kin. [ Written also saggar , sagger , and segger .] Ure.

Segge noun (Zoology) The hedge sparrow. [ Prov. Eng.] Halliwell.

Segment noun [ Latin segmentum , from secare to cut, cut off: confer French segment . See Saw a cutting instrument.]
1. One of the parts into which any body naturally separates or is divided; a part divided or cut off; a section; a portion; as, a segment of an orange; a segment of a compound or divided leaf.

2. (Geom.) A part cut off from a figure by a line or plane; especially, that part of a circle contained between a chord and an arc of that circle, or so much of the circle as is cut off by the chord; as, the segment acb in the Illustration.

3. (Machinery) (a) A piece in the form of the sector of a circle, or part of a ring; as, the segment of a sectional fly wheel or flywheel rim. (b) A segment gear.

4. (Biol.) (a) One of the cells or division formed by segmentation, as in egg cleavage or in fissiparous cell formation. (b) One of the divisions, rings, or joints into which many animal bodies are divided; a somite; a metamere; a somatome.

Segment gear , a piece for receiving or communicating reciprocating motion from or to a cogwheel, consisting of a sector of a circular gear, or ring, having cogs on the periphery, or face. -- Segment of a line , the part of a line contained between two points on it. -- Segment of a sphere , the part of a sphere cut off by a plane, or included between two parallel planes. -- Ventral segment . (Acoustics) See Loor , noun , 5.

Segment intransitive verb (Biol.) To divide or separate into parts in growth; to undergo segmentation, or cleavage, as in the segmentation of the ovum.

Segmental adjective
1. Relating to, or being, a segment.

2. (Anat. & Zoology) (a) Of or pertaining to the segments of animals; as, a segmental duct; segmental papillæ. (b) Of or pertaining to the segmental organs.

Segmental duct (Anat.) , the primitive duct of the embryonic excretory organs which gives rise to the Wolffian duct and ureter; the pronephric duct. -- Segmental organs . (a) (Anat.) The embryonic excretory organs of vertebrates, consisting primarily of the segmental tubes and segmental ducts . (b) (Zoology) The tubular excretory organs, a pair of which often occur in each of several segments in annelids. They serve as renal organs, and often, also, as oviducts and sperm ducts. See Illust. under Sipunculacea . -- Segmental tubes (Anat.) , the tubes which primarily open into the segmental duct, some of which become the urinary tubules of the adult.

Segmentation noun The act or process of dividing into segments; specifically (Biol.) , a self-division into segments as a result of growth; cell cleavage; cell multiplication; endogenous cell formation.

Segmentation cavity (Biol.) , the cavity formed by the arrangement of the cells in segmentation or cleavage of the ovum; the cavity of the blastosphere. In the gastrula stage, the segmentation cavity in which the mesoblast is formed lies between the entoblast and ectoblast. See Illust. of Invagination . -- Segmentation nucleus (Biol.) , the body formed by fusion of the male and female pronucleus in an impregnated ovum. See the Note under Pronucleus . -- Segmentation of the ovum , or Egg cleavage (Biol.) , the process by which the embryos of all the higher plants and animals are derived from the germ cell. In the simplest case, that of small ova destitute of food yolk, the ovum or egg divides into two similar halves or segments (blastomeres), each of these again divides into two, and so on, thus giving rise to a mass of cells (mulberry mass, or morula ), all equal and similar, from the growth and development of which the future animal is to be formed. This constitutes regular segmentation . Quite frequently, however, the equality and regularity of cleavage is interfered with by the presence of food yolk, from which results unequal segmentation . See Holoblastic , Meroblastic , Alecithal , Centrolecithal , Ectolecithal , and Ovum . -- Segmentation sphere (Biol.) , the blastosphere, or morula. See Morula .

Segmented adjective Divided into segments or joints; articulated.

Segnitude, Segnity noun [ Latin segnitas , from segnis slow, sluggish.] Sluggishness; dullness; inactivity. [ Obsolete]

Segno noun [ Italian See Sign .] (Mus.) A sign. See Al segno , and Dal segno .

Sego noun (Botany) A liliaceous plant ( Calochortus Nuttallii ) of Western North America, and its edible bulb; -- so called by the Ute Indians and the Mormons.

Segregate adjective [ Latin segregatus , past participle of segregare to separate; prefix se- aside + grex , gregis , a flock or herd. See Gregarious .]
1. Separate; select.

2. (Botany) Separated from others of the same kind.

Segregate transitive verb [ imperfect & past participle Segregated ; present participle & verbal noun Segregating .] To separate from others; to set apart.

They are still segregated , Christians from Christians, under odious designations.
I. Taylor.

Segregate intransitive verb (Geol.) To separate from a mass, and collect together about centers or along lines of fracture, as in the process of crystallization or solidification.

Segregation noun [ Latin segregatio : confer French ségrégation .]
1. The act of segregating, or the state of being segregated; separation from others; a parting.

2. (Geol.) Separation from a mass, and gathering about centers or into cavities at hand through cohesive attraction or the crystallizing process.

Seiches noun plural [ French] (Geol.) Local oscillations in level observed in the case of some lakes, as Lake Geneva.

Seid noun [ Ar seyid prince.] A descendant of Mohammed through his daughter Fatima and nephew Ali.

Seidlitz adjective Of or pertaining to Seidlitz, a village in Bohemia. [ Written also Sedlitz .]

Seidlitz powders , effervescing salts, consisting of two separate powders, one of which contains forty grains of sodium bicarbonate mixed with two drachms of Rochell... salt (tartrate of potassium and sodium) and the other contains thirty-five grains of tartaric acid. The powders are mixed in water, and drunk while effervescing, as a mild cathartic; -- so called from the resemblance to the natural water of Seidlitz. Called also Rochelle powders . -- Seidlitz water , a natural water from Seidlitz, containing magnesium, sodium, calcium, and potassium sulphates, with calcium carbonate and a little magnesium chloride. It is used as an aperient.

Seigh obsolete imperfect sing. of See . Saw . Chaucer.

Seigneurial adjective [ French, from seigneur . See Seignior .]
1. Of or pertaining to the lord of a manor; manorial. Sir W. Temple.

2. Vested with large powers; independent.

Seignior noun [ Old French seignor , French seigneur , confer Italian signore , Spanish señor from an objective case of Latin senier elder. See Senior .]
1. A lord; the lord of a manor.

2. A title of honor or of address in the South of Europe, corresponding to Sir or Mr . in English.

Grand Seignior , the sultan of Turkey.

Seigniorage noun [ French seigneuriage , Old French seignorage .]
1. Something claimed or taken by virtue of sovereign prerogative; specifically, a charge or toll deducted from bullion brought to a mint to be coined; the difference between the cost of a mass of bullion and the value as money of the pieces coined from it.

If government, however, throws the expense of coinage, as is reasonable, upon the holders, by making a charge to cover the expense (which is done by giving back rather less in coin than has been received in bullion, and is called "levying a seigniorage "), the coin will rise to the extent of the seigniorage above the value of the bullion.
J. S. Mill.

2. A share of the receipts of a business taken in payment for the use of a right, as a copyright or a patent.

Seignioral adjective Of or pertaining to a seignior; seigneurial. "Kingly or seignioral patronage." Burke.

Seignioralty noun The territory or authority of a seignior, or lord. Milman.

Seigniorial adjective Same as Seigneurial .

Seigniorize transitive verb To lord it over. [ Obsolete]

As proud as he that seigniorizeth hell.
Fairfax.

Seigniory noun ; plural -ies . [ Middle English seignorie , Old French seigneurie , French seigneurie ; confer Italian signoria .]
1. The power or authority of a lord; dominion.

O'Neal never had any seigniory over that country but what by encroachment he got upon the English.
Spenser.

2. The territory over which a lord holds jurisdiction; a manor. [ Written also seigneury , and seignory .]

Seine noun [ French seine , or Anglo-Saxon segene , b...th from Latin sagena , Greek .............] (Fishing.) A large net, one edge of which is provided with sinkers, and the other with floats. It hangs vertically in the water, and when its ends are brought together or drawn ashore incloses the fish.

Seine boat , a boat specially constructed to carry and pay out a seine.

Seiner noun One who fishes with a seine.

Seining noun Fishing with a seine.

Seint noun [ See Cincture .] A girdle. [ Obsolete] "Girt with a seint of silk." Chaucer.

Seint noun A saint. [ Obsolete] Chaucer.

Seintuary noun Sanctuary. [ Obsolete]

Seirfish noun (Zoology) Same as Seerfish .

Seirospore noun [ Greek ......... a cord + English spore .] (Botany) One of several spores arranged in a chain as in certain algæ of the genus Callithamnion .

Seise transitive verb See Seize . Spenser.

» This is the common spelling in the law phrase to be seised of (an estate).

Seisin noun See Seizin . Spenser.

Seismic, Seismal adjective [ Greek seismo`s an earthquake, from sei`ein to shake.] Of or pertaining to an earthquake; caused by an earthquake.

Seismic vertical , the point upon the earth's surface vertically over the center of effort or focal point whence the earthquake's impulse proceeds, or the vertical line connecting these two points.

Seismogram noun [ Greek ... earthquake + -gram .] (Physics) The trace or record of an earth tremor, made by means of a seismograph.

Seismograph noun [ Greek ......... an earthquake + -graph .] (Physics) An apparatus for registering the shocks and undulatory motions of earthquakes.

Seismographic adjective Of or pertaining to a seismograph; indicated by a seismograph.

Seismography noun
1. A writing about, or a description of, earthquakes.

2. The art of registering the shocks and undulatory movements of earthquakes.

Seismological adjective Of or pertaining to seismology. -- Seis`mo*log"ic*al*ly , adverb

Seismology noun [ Greek ......... an earthquake + -logy .] The science of earthquakes.

Seismometer noun [ Greek ......... an earthquake + -meter .] (Physics) An instrument for measuring the direction, duration, and force of earthquakes and like concussions.

Seismometric adjective Of or pertaining to seismometry, or seismometer; as, seismometric instruments; seismometric measurements.

Seismometry noun The mensuration of such phenomena of earthquakes as can be expressed in numbers, or by their relation to the coördinates of space.