(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).

(historical: early 20th-century France) A member of an influential, centrist political party favouring moderate social reform, a republican constitution, and secular politics.

A person with radical opinions.

The rudimentary shoot of a plant which supports the cotyledons in the seed, and from which the root is developed downward; the root of the embryo.

A rootlet.