Pl. tubercula. [L. dim. of tūber, TUBER2.] = TUBERCLE (in various senses).

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1693.  trans. Blancard’s Phys. Dict. (ed. 2), Tubercula, the same that Phymata.

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1721.  Bailey, Tubercula, (among Surgeons) little Swellings or Pushes.

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1857.  Dunglison, Med. Lex., Tuberculum Cinereum, ‘Ash-coloured tubercle,’ a mass of cineritious substance at the top of the calamus scriptorius [in the medulla oblongata].

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1872.  Nicholson, Palæont., 350. The ribs have distinct capitula and tubercula.

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