| radical |
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noun
- Person with radical opinions.
- (Hist. " 19th-century England) A member of the most progressive wing of the Liberal Party; someone favouring social reform (but generally stopping short of socialism).
- (Hist. " 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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(mathematics) The root of a quantity as notated by √n.
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(linguistics) In such logogram, logographic writing systems as the Chinese writing system, the portion of a character (if any) that provides an indication of its meaning; contrasted with phonetic.
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(linguistics) In Semitic languages, any one of the set of consonants (typically three) that make up a root.
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(chemistry) A group of atoms, joined by covalent bonds, that take part in reactions as a single unit.
adjective
- Of or pertaining to the root or root cause of the matter.
- Thorough going or fundamental.
The spread of the cancer required radical surgery, and the entire organ was removed.
- Favouring fundamental change, or change at the root cause of the matter.
His beliefs are radical.
- Slang: Extremely incredible.
That was a radical jump!
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(chemistry) Involving free radicals
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| reflexive |
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adjective (no comparative or superlative)
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(grammar) Having a subject and object that are the same.
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(settheory) Of a relation R on a set S, such that xRx for all members x of S (that is, the relation holds between any element of the set and itself).
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"Equals" is a relation.
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| regular |
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noun
- A member of the British Army as opposed to a member of the Territorial Army or Reserve.
- A frequent, routine visitor to an establishment.
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(Canadian English) A coffee with one cream and one sugar.
adjective
- with constant frequency or pattern.
- normal; ordinary
- obeying rules
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(grammar) (of a verb, plural, etc) following a set or common pattern
The verb "to walk" is regular.
The noun "mouse" has the irregular plural "mice".
- frequent or common
He made visits to go see his mother.
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(snowboarding): Riding with the left foot forward.
- exemplary, Exemplary; excellent example of; utter.
a genius
a John Bull
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| relational |
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adjective
- Relating to relations.
- A database technology using tables and the principles set forth by Dr. Edgar F. Codd. (Contrary to popular notion, "relation" in this context refers to tables, and not linkages.)
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| relative |
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noun
- someone in the same family; someone connected by blood, marriage, or adoption
- refer to relativity for a scientific definition
adjective
- not absolute; connected to or depending on something else
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| restrictive |
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adjective- confining, Confining, limiting, containing with in defined bounds.
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