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radical US English

(Especially of change or action) relating to or affecting the fundamental nature of something; far-reaching or thorough

radical US Thesaurus

radical reform

radical ion US English

A free radical species that carries a charge.

acid radical US English

A radical formed by the removal of hydrogen ions from an acid

free radical US English

An uncharged molecule (typically highly reactive and short-lived) having an unpaired valence electron

radical axis US English

The straight line which is the locus of the points whose powers with respect to two given coplanar circles are equal.

radical chic US English

The fashionable affectation of radical left-wing views

radical left US English

People with extreme left-wing views; the side of the political spectrum occupied by these people; (in later use) specifically = New Left.

radical plane US English

A plane whose points have equal power with respect to two given spheres (identical with the plane containing the circle of intersection of the spheres if they intersect).

radical right US English

Scottish Law an owner's absolute or actual right in a piece of land or property, distinguished from another's equitable or trust rights in that property.

radical sign US English

The sign √, which indicates the square root of the number following (or a higher root indicated by a preceding superscript numeral)

radical word US English

A simple uncompounded word having the form of, or directly based on, a root.

radical centre US English

(In a system of three coplanar circles) the point of intersection of the three radical axes of each of the three pairs of circles.

radical circle US English

The circle whose centre is the radical centre of three given circles and which intersects each circle orthogonally.

radical letter US English

An original unchanged letter, especially a Welsh initial consonant, which is liable to be altered or mutated by a preceding word.

radical reform US English

A thoroughgoing reform; specifically a reform of the British social and parliamentary system called for during the end of the 18th and early 19th cent. by those opposed to George III's parliamentary control.

radical vinegar US English

= glacial acetic acid.

radical empiricism US English

(Originally, in the philosophy of William James (1842–1910)) the theory that ultimate reality consists of pure experience; (more generally) the view that knowledge of reality can only be achieved through a rigorous and sceptical empiricism.

radical empiricist US English

An adherent or advocate of radical empiricism.

radical feminism US English

Advocacy of radical left-wing measures designed to counter the traditional dominance of men over women; the movement associated with this.

radical feminist US English

Reflecting or promoting radical feminism.

radical pluralism US English

A fundamental pluralism.

radical pluralist US English

An adherent or advocate of a fundamental pluralism.

philosophical radical US English

A member of a group of early 19th-cent. radicals whose advocacy of political reform was based on Benthamite utilitarian philosophy.

philosophic radical US English

= philosophical radical.

radical reformation US English

= radical reform.

(modified) radical mastoidectomy in mastoidectomy US English

Surgical removal of the lateral wall and contents of the mastoid process, usually to treat mastoiditis; (later also, chiefly in (modified) radical mastoidectomy) this procedure combined with excision of some or all of the adjacent middle ear structures.