(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-.
2. In physiology, denoting the condition when the ends of a contracting muscle are held fixed so that contraction produces increased tension at a constant overall length.
3. In chemistry, compounded of the same elements in the same proportion by weight, but differing in one or more properties.
4. Having similar parts in similar numbers.
2. The condition of having two or more comparable parts made up of identical numbers of similar segments.
2. Having or designating floral whorls with equal numbers of parts.
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.
2. A condition of the eyes in which they have the same power of refraction, or the bending of light that takes place within the human eye.
Refractive errors include nearsightedness (myopia), farsightedness (hyperopia), and astigmatism. Lenses, or glasses, can be used to control the amount of refraction, correcting those errors.
2. Equality of measure; such as, equality of height above sea level or equality of loudness etc.
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.
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.
2. Having the same surname.
3. A word of the same derivation or form as another name.