tuberationn.
/tjuːbəˈreɪʃən/ rare.
Formation or production of a tuber or tubers.
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tuberation1727
1727 N. Bailey Universal Etymol. Eng. Dict. II Tuberation, a swelling.
1902 Times 19 Sept. 6/3 The excessive tuberation which potatoes brought under cultivation acquire.
This entry has not yet been fully updated (first published 1915; most recently modified version published online June 2021).
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n.1727