The difference between Derived and Radical
When used as adjectives, derived means of, or pertaining to, conditions unique to the descendant species of a clade, and not found in earlier ancestral species, whereas radical means favoring fundamental change, or change at the root cause of a matter.
Radical is also noun with the meaning: a member of the most progressive wing of the liberal party.
check bellow for the other definitions of Derived and Radical
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Derived as an adjective (systematics):
Of, or pertaining to, conditions unique to the descendant species of a clade, and not found in earlier ancestral species.
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Derived as an adjective (comparable, archaic, taxonomy):
Possessing features believed to be more advanced or improved than those other organisms.
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Derived as an adjective:
product of derivation
Examples:
"The French language is derived from Latin."
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Derived as a verb:
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Radical as an adjective:
Favoring fundamental change, or change at the root cause of a matter.
Examples:
"His beliefs are radical."
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Radical as an adjective (botany, not comparable):
Pertaining to a root .
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Radical as an adjective:
Pertaining to the basic or intrinsic nature of something.
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Radical as an adjective:
Thoroughgoing; far-reaching.
Examples:
"The spread of the cancer required radical surgery, and the entire organ was removed."
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Radical as an adjective (lexicography, not comparable):
Of or pertaining to the root of a word.
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Radical as an adjective (phonology, phonetics, not comparable, of a sound):
Produced using the root of the tongue.
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Radical as an adjective (chemistry, not comparable):
Involving free radicals.
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Radical as an adjective (math):
Relating to a radix or mathematical root.
Examples:
"a radical quantity; a radical sign"
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Radical as an adjective (slang, 1980s & 1990s):
Excellent; awesome.
Examples:
"That was a radical jump!"
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Radical as a noun (historical: 19th-century Britain):
A member of the most progressive wing of the Liberal Party; someone favouring social reform (but generally stopping short of socialism).
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Radical as a noun (historical: early 20th-century France):
A member of an influential, centrist political party favouring moderate social reform, a republican constitution, and secular politics.
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Radical as a noun:
A person with radical opinions.
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Radical as a noun (arithmetic):
A root (of a number or quantity).
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Radical as a noun (linguistics):
In logographic writing systems such as the Chinese writing system, the portion of a character (if any) that provides an indication of its meaning, as opposed to phonetic.
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Radical as a noun (linguistics):
In Semitic languages, any one of the set of consonants (typically three) that make up a root.
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Radical as a noun (chemistry):
A group of atoms, joined by covalent bonds, that take part in reactions as a single unit.
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Radical as a noun (organic chemistry):
A free radical.
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Radical as a noun (algebra, commutative algebra, ring theory, of an [[ideal]]):
Given an ideal I in a commutative ring R, another ideal, denoted Rad(I) or \sqrt{I}, such that an element x ∈ R is in Rad(I) if, for some positive integer n, xn ∈ I; equivalently, the intersection of all prime ideals containing I.
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Radical as a noun (algebra, ring theory, of a [[ring]]):
Given a ring R, an ideal containing elements of R that share a property considered, in some sense, "not good".
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Radical as a noun (algebra, ring theory, of a [[module]]):
The intersection of maximal submodules of a given module.
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Radical as a noun (number theory):
The product of the distinct prime factors of a given positive integer.