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Iso Words: “isoimmunization” to “isozooid”,
Part 2 of 2.

iso-, is- (Greek: equal; by extension: same, similar, alike; normally used as a prefix.

Used in numerous terms, nearly all scientific; denoting: equality, similarity, uniformity, or identity; the second element being properly and usually of Greek origin, rarely of Latin [the proper prefix in the latter case being equi-]. In biology, denoting for or from different individuals of the same species). For a large list of iso- opposites or antonyms, see aniso-.

Immunization of an individual by the introduction of antigens from another individual of the same species.
1. Having thunderstorm phenomena of equal frequency or severity, or simultaneous occurrence.
2. A line on a map that connects places of equal thunderstorm frequency.
Designating areas over which the keraunographic records of thudnerstorm phenomena are the same or similar.
Designating areas over which thunderstorm discharges are audible in the keraunophone with equal intensity.
Characterized by no disturbance to the speed and direction of a fluid when it is withdrawn as a sample from a flow.
Having equal sides.
isolex, isolexic, isolectic:
A line connecting places in which there is uniformity of vocabulary.
A line on a chart or map connecting points of equal light intensity.
1. In optics, a curve, line, or surface whose points all have equal light intensity.
2. A curve or surface connecting points at which light intensity is the same. Also known as, isofootcandle, isophot.
With one or more compounds.
In chemistry, compounded of the same elements in the same proportion by weight, but differing in one or more properties.
isomerism, isomerous:
1. Repetition of similar parts.
2. The condition of having two or more comparable parts made up of identical numbers of similar segments.
In biology and zoology, with parts that are similar in number, markings, or other characteristics.
1. Of the same measure; characterized by equality of measure.
2. Used to describe exercises in which muscles are put under tension but not allowed to contract.
3. In poetry, having the same number of metrical feet in each line.
A form of exercise in which the muscles are pushed against something fixed or against other muscles to strengthen them.
A condition of equal refraction in both eyes.
The fact of being equal in dimension with several scientific, geographical, mathematical, meteorological, and other applications.
isomorph, isomorphic, isomorphism:
1. Superficial similarity between individuals of different species or races.
2. Equal in form; crystallizing in the same form.
3. A line in a linguistic atlas connecting places exhibiting identical or nearly identical morphological forms; a morphological isogloss.
4. A substance or organism that exhibits similarity in form or appearance to others.
5. An animal, plant, or group having superficial similarity to another; although phylogenetically different.
Used to describe a chemical compound that is able to crystallize in a form similar to another chemical compound.
1. A line on a weather chart connecting points that have the same degree of cloudiness.
2. A line on a map, etc. connecting places at which the amount of clouds for a given period (e.g., a year) is the same.
Indicating equality regarding cloudiness.
Denotes marriage between persons of the same or nearly the same age.
isonomy, isonomic, isonomous:
Equality of laws, or of people before the law; equality of political rights and privileges among the citizens of a state.
isonym, isonymous:
1. A new name, of species, etc., based on the same oldest name or basinym.
2. Having the same surname. Such a characteristic is an indicator, but not proof, of the consanguinity of spouses in pedigree analysis.
isopach, isopachous:
A line on a map that connects points of equal thickness within a particular stratigraphic unit or group of units.
An equiglacial line connecting points where ice is present for approximately the same number of days in winter.
1. The theory that disease may be cured by a product of the disease, as small-pox by application of the variolous matter.
2. The popular notion that disease in a particular organ may be cured by eating the same organ of a healthy animal.
3. A method of treating disease by administering products of the disease or portions of the affected organ.
A line on a weather map connecting points where ice formation begins at approximately the same time at the onset of winter.
A figure having a perimeter equal to that of another.
That branch of geometry which deals with isoperimetrical figures, and the problems connected with them.
Feeding on one or allied species; such as, fungi.
About a line on a map, connecting places at which phenomena of any kind are equal.
1. A line on a language map surrounding an area within which a particular pronunciation is used.
2. A phonetic isogloss; also, a phonetic feature shared by speakers in contiguous areas.
isophote, isophotic:
A line (imaginary or in a diagram) connecting points where the brightness or the illumination is the same.
Having uniform (similar form) foliage leaves, on the same plant or stem.
An individual plant of a compound plant-organism, not differentiated from the rest.
Equal vision in the eyes.
Representing, having, or characterized by equal or constant pressure; also, a line in a diagram representing states of equal pressure.
Line representing, on a map, distribution of equal amounts of plankton, or of particular plankton species.
Removed from one individual and transplanted to another of the same species, as a graft.
isopleth, isoplethic:
Equal in quantity.
A line on a map drawn through geographical points having the same pluvial (rain, precipitation) index.
Isopoda, isopod:
In zoology, a small invertebrate animal with a flattened body and seven pairs of legs, usually of equal size and form with each pair attached to a segment of the thorax. Sow bugs are isopods, but most are marine. Order: Isopoda.
Of feathers, having the two webs equal and similar.
Equality of rights of citizenship; equality of civil rights.
isopor, isoporic:
A line (either imaginary or on a map) connecting points at which equal annual changes in some parameter of the earth’s magnetic field are observed.
A colorless volatile-liquid compound obtained by the dry distillation of raw rubber.
With pygidium and cephalon of equal size; such as, trilobites.
Equality of intake and output of water; maintenance of water equilibrium.
Having two equal sides (said of a triangle).
A line connecting points at which the intensity of an earthquake was felt equally or a line on a chart or map connecting points of equal earthquake intensity.
1. Relating to the existence of characteristics or feelings of both sexes in one person.
2. Descriptive of an individual’s somatic characteristics, or of processes occurring within, that are consonant with the sex of that individual.
A line on a chart of equal magnitude of vertical wind shear.
Subjected to equal pressure from every side being in hydrostatic equilibrium, as a body submerged in a liquid at rest.
1. A state of equilibrium between forces such as accumulated ice pushing down on a section of the Earth’s surface and those pushing up from below.
2. A theory of the condition of approximate equilibrium in the outer part of the earth, such that the gravitational effect of masses extending above the surface of the geoid in continental areas is approximately counterbalanced by a deficiency of density in the material beneath those masses while deficiency of density in ocean waters is counterbalanced by an excess in density of the material under the oceans.
isotach, isotachy:
A line on a weather chart connecting points of equal windspeed.
The treatment of a disease by administering the active causative agent of the same disease.
isothere, isotheral:
A line connecting places on the earth’s surface having the same mean summer temperature.
1. A line connecting places on the earth’s surface having the same mean, or constant, temperature.
2. A curve or formula showing the relationship between two variables; such as, pressure and volume, when the temperature is held constant.
isothermal, isothermic:
Relating to or having a constant temperature.
A line connecting points having the same temperature in a diagram of a vertical section of the ocean.
An abnormal perception in which stimulations of pain, heat, and cold are all felt as heat.
Emotional equilibrium.
Pertaining to a quantity that has equal value in space at a particular time.
1. Having uniform tension, as the fibers of a contracted muscle.
2. Of a solution, having the same osmotic pressure as the fluid phase of a cell or tissue.
Normal tension under pressure or stimulus.
One of two or more forms of an element having the same properties and the same atomic number but different mass numbers or atomic weights.
Producing toxic effects in individuals of the same species as the originating individual; characteristic of or pertaining to a homeotoxin.
A toxin from an individual that is toxic to other individuals of the same species; homeotoxin.
isotropic, isotropy:
1. Possessing similar qualities in every direction.
2. Having equal refraction.
3. Having physical properties that do not vary with direction.
1. Inhabited by similar forms of animal life.
2. Characterized by or indicating the same forms of animal life.
A “zooid”, or individual of a compound or “colonial” animal organism, not differentiated from the rest; opposite of allozooid.