A root; a fundamental part or principle.

根；基本。

A word or root from which other words are formed.

【语言】字根。

One who cuts at the root of things; an extremist; a member of a group that advocates revolutionary reform.

极端派分子；急进派分子。

(Also, radicle) a group of atoms that acts as a single atom in a compound.

【化】根；基。

A quantity considered as the root of another quantity; also, a symbol, called radical sign, used to indicate that a root is to be extracted.

【数】根数；根号。(√)

Pertaining to a root or origin.

根的；由来的。

Fundamental.

基本的。

Desiring extreme measures.

急进派的。

Pertaining to the root of a quantity.

【数】根数的。

Thoroughgoing; extreme.

激进的；极端的。