The word "radicolous" is spelled with a Latin root word "radix" which means "root" and a suffix "-colous" which means "inhabiting or residing in". The correct pronunciation of "radicolous" is /rəˈdɪkələs/. The first syllable "ra" is pronounced with a schwa sound, the second syllable "di" sounds like "dih" and the third syllable "co" is pronounced like "kuh". The word "radicolous" means "living or growing on roots" and is commonly used in botany.
The word radicolous is derived from the Latin word radiculus, which means a small root. In turn, radiculus is a diminutive form of radix, meaning root. The -ous suffix is added to form an adjective, making radicolous mean having roots or dwelling in roots.