IPA: /ˈtjuːbərəs/
KK: /ˈtjuːbərəs/
Relating to or resembling a thickened part of a plant that stores nutrients, often found underground.
The tuberous roots of the plant provide essential nutrients for its growth.
Tuberous → It is formed from "tuber" (from Latin *tuber*, meaning a swelling or lump) and the suffix "-ous" (meaning full of or having the quality of). The word "tuberous" describes something that is full of or characterized by tubers, which are swollen underground stems or roots.
Think of a 'swelling' ('tuber') that is 'full of' ('-ous') — that's why tuberous refers to something characterized by tubers.