tuberous

UK: /ˈtjuːbərəs/ US: (to̅o̅′bər əs, tyo̅o̅′-)

WordReference Random House Unabridged Dictionary of American English © 2023

tu•ber•ous  (to̅o̅′bər əs, tyo̅o̅′-), adj. 

1. Botany characterized by the presence of rounded or wartlike prominences or tubers.
2. Botany of the nature of such a prominence.
3. Botany bearing tubers.
4. Botany having the nature of or resembling a tuber.

Also, tuberose. 

• Latin tūberōsus knobby. See tuber¹, -ous
• 1640–50

Collins Concise English Dictionary © HarperCollins Publishers::

tuberous /ˈtjuːbərəs/, tuberose /ˈtjuːbəˌrəʊs/ adj

1. (of plants or their parts) forming, bearing, or resembling a tuber or tubers
2. of, relating to, or having warty protuberances or tubers

Etymology: 17th Century: from Latin tūberōsus full of knobs; see tuber

WordReference Random House Learner's Dictionary of American English © 2023

tu•ber¹ /ˈtubɚ, ˈtyu-/   n. [countable]

1. Botany a thick, fleshy underground stem, as a potato.

tu•ber•ous, adj. 

WordReference Random House Unabridged Dictionary of American English © 2023

tu•ber¹  (to̅o̅′bər, tyo̅o̅′-), n. 

1. Botany a fleshy, usually oblong or rounded thickening or outgrowth, as the potato, of a subterranean stem or shoot, bearing minute scalelike leaves with buds or eyes in their axils from which new plants may arise.
2. Anatomy a rounded swelling or protuberance;
   a tuberosity;
   a tubercle.

• Latin tūber bump, swelling. Compare truffle 
• 1660–70

tu′ber•less, adj. 
tu′ber•oid′, adj. 

tub•er²  (to̅o̅′bər, tyo̅o̅′-), n. 

1. a person or thing that forms, installs, or operates with tubes.
2. Sport Also called inner-tuber. a person who participates in the sport of tubing.

• tube + -er¹ 1920–25