WordDictionary

Adjective:

• botany|not comparable Of or pertaining to a root of a plant.
• slang Excellent.
• chemistry|not comparable Involving free radicals
• linguistics|not comparable Of or pertaining to the root of a word.
• Favouring fundamental change, or change at the root cause of a matter.
• Of or pertaining to the intrinsic nature of something.
• Thoroughgoing.

Noun:

• A person with radical opinions.
• arithmetic A root (of a number or quantity).
• chemistry A group of atoms, joined by covalent bonds, that take part in reactions as a single unit.
• historical: 19th-century England 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.
• linguistics In logographic writing systems as the Chinese writing system, the portion of a character (if any) that provides an indication of its meaning, as opposed to '''phonetic'''.
• linguistics In Semitic languages, any one of the set of consonants (typically three) that make up a root.
• organic chemistry A free radical.