Dictionary.net

(linguistics) of or relating to or constituting a linguistic root; "a radical verb form"

(linguistics) the form of a word after all affixes are removed; "thematic vowels are part of the stem"

a person who has radical ideas or opinions

arising from or going to the root; "a radical flaw in the plan"

(linguistics) the form of a word after all affixes are removed; "thematic vowels are part of the stem"

a person who has radical ideas or opinions

arising from or going to the root; "a radical flaw in the plan"

especially of leaves; located at the base of a plant or stem; especially arising directly from the root or rootstock or a root-like stem; "basal placentation"; "radical leaves"

Of or pertaining to the root; proceeding directly from the root.

Hence: Of or pertaining to the root or origin; reaching to the center, to the foundation, to the ultimate sources, to the principles, or the like; original; fundamental; thorough-going; unsparing; extreme; as, radical evils; radical reform; a radical party.

Belonging to, or proceeding from, the root of a plant; as, radical tubers or hairs.

Proceeding from a rootlike stem, or one which does not rise above the ground; as, the radical leaves of the dandelion and the sidesaddle flower.

Relating, or belonging, to the root, or ultimate source of derivation; as, a radical verbal form.

Of or pertaining to a radix or root; as, a radical quantity; a radical sign. See below.

A primitive word; a radix, root, or simple, underived, uncompounded word; an etymon.

A primitive letter; a letter that belongs to the radix.

A characteristic, essential, and fundamental constituent of any compound; hence, sometimes, an atom.

Specifically, a group of two or more atoms, not completely saturated, which are so linked that their union implies certain properties, and are conveniently regarded as playing the part of a single atom; a residue; -- called also a compound radical. Cf. Residue.

A radical quantity. See under Radical, a.

A radical vessel. See under Radical, a.

One who advocates radical changes in government or social institutions, especially such changes as are intended to level class inequalities; - opposed to conservative.

Of or pertaining to the root; proceeding directly from the root.

Hence: Of or pertaining to the root or origin; reaching to the center, to the foundation, to the ultimate sources, to the principles, or the like; original; fundamental; thorough-going; unsparing; extreme; as, radical evils; radical reform; a radical party.

Belonging to, or proceeding from, the root of a plant; as, radical tubers or hairs.

Proceeding from a rootlike stem, or one which does not rise above the ground; as, the radical leaves of the dandelion and the sidesaddle flower.

Relating, or belonging, to the root, or ultimate source of derivation; as, a radical verbal form.

Of or pertaining to a radix or root; as, a radical quantity; a radical sign. See below.

A primitive word; a radix, root, or simple, underived, uncompounded word; an etymon.

A primitive letter; a letter that belongs to the radix.

A characteristic, essential, and fundamental constituent of any compound; hence, sometimes, an atom.

Specifically, a group of two or more atoms, not completely saturated, which are so linked that their union implies certain properties, and are conveniently regarded as playing the part of a single atom; a residue; -- called also a compound radical. Cf. Residue.

A radical quantity. See under Radical, a.

A radical vessel. See under Radical, a.

One who advocates radical changes in government or social institutions, especially such changes as are intended to level class inequalities; - opposed to conservative.

A simple word, or root, from which other words are formed; a person who holds extreme views and takes extreme measures.

Pertaining to the root or origin; original; extreme; as, a radical difference of opinion; in mathematics, showing or containing the root of a number; pertaining to a political party of advanced views.

Radicalness.

Radicalness.

Pertaining to the root, or origin: original: reaching to the principles: implanted by nature: not derived: serving to originate: (bot.) proceeding immediately from the root: (politics) ultra-liberal, democratic.

A root: a primitive word or letter: one who advocates radical reform: (chem.) the base of a compound.

Radicalness.

Proceeding from or pertaining to the root; essential; fundamental.

Thoroughgoing; unsparing; extreme.

An extremist.

The primitive part of a word; a root; radicle.

A quantity of which the root is required.

A substance which admits combination with a simple body. Applied to active treatment for elimination of a diseased condition.

A root; primitive word; one who advocates a fundamental change in principles of government.

Original; rooted; implanted by nature; reaching to the principles; pertaining to radicals.

Arising from the root close to the ground, as basal leaves.

Is one in which the disease is destroyed, as it were, from the root. It is used in opposition to palliative cure.

Atom or group of atoms which may be combined with other atoms or groups.

Directed to the cause; going to the root or source of a morbid process.

Pertaining to a root.

Springing from the root or from a rootlike portion of the stem.

Concerned with the root, origin, or essence; reaching to the root, thorough; curative as opposed to palliative.

Of an operation, one which removes thoroughly every trace of diseased tissue or the whole of an organ or organs. [Lat.]

n. A primitive word ; a root or simple, underived, uncompounded word : - a letter that belongs to the root ;-au extreme liberal in politics ; a member of a political party which advocated radical or thorough reform in the constitution and administrative government of the country;-in chemistry, the original element or principle in a compound substance ; that which constitutes the distinguishing principle of an acid or base by its union with an acidifying or basifying element or ingredient.