Isoclinal, Isoclinic I`so·cli"nal, I`so·clin"ic adjective [
Iso- + Greek ... to incline.]
Of or pertaining to, or indicating, equality of inclination or dip; having equal inclination or dip. Isoclinal lines (Magnetism) ,
lines on the earth's surface connecting places at which a dipping needle indicates the same inclination or dip.
Isocrymal I`so·cry"mal adjective (Physics Geology) Pertaining to, having the nature of, or illustrating, an isocryme; as, an isocrymal line; an isocrymal chart.
Isocryme I"so·cryme noun [
Iso- + Greek ... cold.]
(Physics Geology) A line connecting points on the earth's surface having the same mean temperature in the coldest month of the year.
Isocrymic I`so·crym"ic adjective Isocrymal.
Isocyanic I`so·cy·an"ic adjective [
Iso- +
cyanic .]
(Chemistry) Designating an acid isomeric with cyanic acid. Isocyanic acid ,
an acid metameric with cyanic acid, and resembling it in its salts. It is obtained as a colorless, mobile, unstable liquid by the heating cyanuric acid. Called technically carbimide .
Isocyanuric I`so·cy`a·nu"ric adjective [
Iso- +
cyanuric .]
(Chemistry) Designating, or pertaining to, an acid isomeric with cyanuric acid, and called also fulminuric acid . See under Fulminuric .
Isodiabatic I`so·di`a·bat"ic adjective [
Iso- + Greek ... to pass through.]
(Physics) Pertaining to the reception or the giving out of equal quantities of heat by a substance. Rankine. Isodiabatic lines or
curves ,
a pair of lines or curves exhibiting, on a diagram of energy, the law of variation of the pressure and density of a fluid, the one during the lowering, and the other during the raising, of its temperature, when the quantity of heat given out by the fluid during any given stage of the one process is equal to the quantity received during the corresponding stage of the other. Such lines are said to be isodiabatic with respect to each other. Compare Adiabatic .
Isodiametric I`so·di`a·met"ric adjective [
Iso- +
diametric .]
1. (Crystallog.) Developed alike in the directions of the several lateral axes; -- said of crystals of both the tetragonal and hexagonal systems. 2. (Botany) Having the several diameters nearly equal; -- said of the cells of ordinary parenchyma.
Isodimorphic I`so·di·mor"phic adjective [
Iso- +
dimorphic .]
Isodimorphous.
Isodimorphism I`so·di·mor"phism noun Isomorphism between the two forms severally of two dimorphous substances.
Isodimorphous I`so·di·mor"phous adjective [
Iso- +
dimorphous .]
Having the quality of isodimorphism.
Isodrome I"so·drome noun [
Iso- + Greek ... course.]
(Nav.) A method of moving a fleet from one formation to another, the direction usually being changed eight points (90°), by means of paths of equal length for each ship. It is prohibited in the United States navy.
Isodulcite I`so·dul"cite noun [
Iso- +
dulcite .]
(Chemistry) A white, crystalline, sugarlike substance, obtained by the decomposition of certain glucosides, and intermediate in nature between the hexacid alcohols ( dulcite , mannite , etc.) and the glucoses.
Isodynamic I`so·dy·nam"ic adjective [
Iso- +
dynamic .]
Of, pertaining to, having, or denoting, equality of force. Isodynamic foods (Physiol.) ,
those foods that produce a similar amount of heat. --
Isodynamic lines (Magnetism) ,
lines on the earth's surface connecting places at which the magnetic intensity is the same.
Isodynamous I`so·dy"na·mous adjective [ Greek .... See
Isodynamic .]
Of equal force or size.
Isogeotherm I`so·ge"o·therm noun [
Iso- + Greek
gh^ the earth +
qe`rmh heat.]
(Physics Geology) A line or curved surface passing beneath the earth's surface through points having the same mean temperature.
Isogeothermal, Isogeothermic I`so·ge`o·ther"mal, I`so·ge`o·ther"mic adjective Pertaining to, having the nature of, or marking, isogeotherms; as, an isogeothermal line or surface; as isogeothermal chart. --
noun An isogeotherm.
Isogonic I`so·gon"ic adjective [
Iso- + Greek
gwni`a angle.]
Pertaining to, or noting, equal angles. Isogonic lines (Magnetism) ,
lines traced on the surface of the globe, or upon a chart, connecting places at which the deviation of the magnetic needle from the meridian or true north is the same.
Isogonic I`so·gon"ic adjective (Zoology) Characterized by isogonism.
Isogonism I·sog"o·nism noun [
Iso- + Greek ... offspring, generative parts.]
(Zoology) The quality of having similar sexual zooids or gonophores and dissimilar hydrants; -- said of certain hydroids.
Isographic I`so·graph"ic adjective Of or pertaining to isography.
Isography I·sog"ra·phy noun [
Iso- +
-graphy .]
Imitation of another's handwriting.
Isohyetose I`so·hy"e·tose` adjective [
Iso- + Greek
"yeto`s rain.]
(Physics Geology) Of or pertaining to lines connecting places on the earth's surface which have a mean annual rainfall. --
noun An isohyetose line.
Isolable I"so·la·ble adjective [ See
Isolate .]
(Chemistry) Capable of being isolated, or of being obtained in a pure state; as, gold is isolable .
Isolate I"so·late transitive verb [
imperfect & past participle Isolated ;
present participle & verbal noun Isolating .] [ Italian
isolato , past participle of
isolare to isolate, from
isola island, Latin
insula . See 2d
Isle , and confer
Insulate .]
1. To place in a detached situation; to place by itself or alone; to insulate; to separate from others. Short isolated sentences were the mode in which ancient wisdom delighted to convey its precepts.
Bp. Warburton. 2. (Electricity) To insulate. See Insulate . 3. (Chemistry) To separate from all foreign substances; to make pure; to obtain in a free state.
Isolated I"so·la`ted adjective Placed or standing alone; detached; separated from others. Isolated point of a curve .
(Geom.) See Acnode .
Isolatedly I"so·la`ted·ly adverb In an isolated manner.
Isolation I`so·la"tion (-lā"shŭn)
noun [ Confer French
isolation .]
The act of isolating, or the state of being isolated; insulation; separation; loneliness. Milman.
Isolator I"so·la`tor (ī"so*lā`tẽr
or īs"o*lā`tẽr)
noun One who, or that which, isolates.
Isologous I·sol"o·gous adjective [
Iso- + Greek
lo`gos proportion.]
(Chemistry) Having similar proportions, similar relations, or similar differences of composition; -- said specifically of groups or series which differ by a constant difference; as, ethane, ethylene, and acetylene, or their analogous compounds, form an isologous series.
Isomer I"so·mer (ī"so*mẽr)
noun [ See
Isomeric .]
(Chemistry) A body or compound which is isomeric with another body or compound; a member of an isomeric series.
Isomere I"so·mere noun [
Iso- +
- mere .]
(Zoology) 1. A homologous or corresponding part or segment. 2. (Chemistry) = Isomer .
Isomeric I`so·mer"ic (-mĕr"ĭk)
adjective [
Iso- + Greek
me`ros part: confer French
isomérique .]
(Chemistry) Having the same percentage composition; -- said of two or more different substances which contain the same ingredients in the same proportions by weight, often used with with . Specif.: (a) Polymeric; i. e. , having the same elements united in the same proportion by weight, but with different molecular weights; as, acetylene and benzine are isomeric ( polymeric ) with each other in this sense. See Polymeric . (b) Metameric; i. e. , having the same elements united in the same proportions by weight, and with the same molecular weight, but with a different structure or arrangement of the ultimate parts; as, ethyl alcohol and methyl ether are isomeric ( metameric ) with each other in this sense. See Metameric .
Isomeride I·som"er·ide noun (Chemistry) An isomer. [ R.]
Isomerism I·som"er·ism noun (Chemistry) The state, quality, or relation, of two or more isomeric substances. Physical isomerism (Chemistry) ,
the condition or relation of certain ( metameric ) substances, which, while chemically identical (in that they have the same composition, the same molecular weights, and the same ultimate constitution), are yet physically different, as in their action on polarized light, as dextro- and lævo-tartaric acids. In such compounds there is usually at least one unsymmetrical carbon atom. See Unsymmetrical .
Isomeromorphism I`so·mer`o·mor"phism noun [
Isomer + Greek ... form +
-ism .]
(Crystallog.) Isomorphism between substances that are isomeric.
Isometric, Isometrical I`so·met"ric, I`so·met"ric·al adjective [
Iso- + Greek
me`tron measure.]
1. Pertaining to, or characterized by, equality of measure. 2. (Crystallog.) Noting, or conforming to, that system of crystallization in which the three axes are of equal length and at right angles to each other; monometric; regular; cubic. Confer Crystallization . Isometric lines (Thermodynamics) ,
lines representing in a diagram the relations of pressure and temperature in a gas, when the volume remains constant. --
Isometrical perspective .
See under Perspective . --
Isometrical projection ,
a species of orthographic projection, in which but a single plane of projection is used. It is so named from the fact that the projections of three equal lines, parallel respectively to three rectangular axes, are equal to one another. This kind of projection is principally used in delineating buildings or machinery, in which the principal lines are parallel to three rectangular axes, and the principal planes are parallel to three rectangular planes passing through the three axes.
Isomorph I"so·morph noun [ See
Isomorphous .]
A substance which is similar to another in crystalline form and composition.
Isomorph I"so·morph noun (Biol.) An animal, plant, or group having superficial similarity to another, although phylogenetically different.
Isomorphic I`so·mor"phic adjective Isomorphous.
Isomorphic I`so·mor"phic adjective (Biol.) Alike in form; exhibiting isomorphism.
Isomorphism I`so·mor"phism noun [ Confer French
isomorphisme .]
(Crystallog.) A similarity of crystalline form between substances of similar composition, as between the sulphates of barium (BaSO 4 ) and strontium (SrSO 4 ). It is sometimes extended to include similarity of form between substances of unlike composition, which is more properly called homœomorphism .
Isomorphous I`so·mor"phous adjective [
Iso- +
-morphous .]
Having the quality of isomorphism.
Isonandra I`so·nan"dra noun [
Iso- + Greek ..., ..., a man, male.]
(Botany) A genus of sapotaceous trees of India. Isonandra Gutta is the principal source of gutta-percha.
Isonephelic I`so·ne·phel"ic adjective [
Iso- + Greek ... a cloud.]
(Physics Geology) Having, or indicating, an equal amount of cloudiness for a given period; as, isonephelic regions; an isonephelic line.
Isonicotine I`so·nic"o·tine noun [
Iso- +
nicotine .]
(Chemistry) A crystalline, nitrogenous base, C 10 H 14 N 2 , isomeric with nicotine.
Isonicotinic I`so·nic`o·tin"ic adjective (Chemistry) (a) Pertaining to, or derived from, isonicotine. (b) Pertaining to, or designating, an acid isomeric with nicotinic acid.
Isonitroso- I`so·ni·tro"so- [ Iso- + nitroso -.] (Chemistry) A combining form (also used adjectively), signifying: Pertaining to, or designating, the characteristic, nitrogenous radical, NOH, called the isonitroso group.
Isonomic I`so·nom"ic adjective [ Greek ...; ... equal +
no`mos law.]
The same, or equal, in law or right; one in kind or origin; analogous; similar. Dana.
Isonomy I·son"o·my noun [ Greek ...: confer French
isonomie . See
Isonomic .]
Equal law or right; equal distribution of rights and privileges; similarity.
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