Rooted; deep-seated; firmly established. / (botany) Having a root; growing from a root; (of a fungus) having rootlike outgrowths at the base of the stipe. / (zoology) Fixed at the bottom as if rooted.

(transitive, rare) To cause to take root; to plant or establish firmly. / (intransitive, obsolete) To take root; to become established. / (transitive, arithmetic, rare) To extract the root of a number.

Third-person singular simple present indicative form of radicate

(now rare) Rooted; firmly established.

simple past tense and past participle of radicate

In a radical manner; fundamentally; very. / At the root.

Favoring fundamental change, or change at the root cause of a matter. / (botany, not comparable) Pertaining to a root (of a plant). / Pertaining to the basic or intrinsic nature of something.

(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).

Any of various radical social or political movements that aim at fundamental change in the structure of society

plural of radical