Longman Dictionary of Contemporary English homepage

Topic: PLANTS

Date: 1600-1700
Language: Latin
Origin: 'lump, tuber, truffle'

tuber

 noun
     
tu‧ber [countable]
HBP a round swollen part on the stem of some plants, such as the potato, that grows below the ground and from which new plants grow
—tuberous adjective
Definition of tuber from the Longman Dictionary of Contemporary English within
the topic PLANTS
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