Pl. tubercula. [L. dim. of tūber, TUBER2.] = TUBERCLE (in various senses).
1693. trans. Blancards Phys. Dict. (ed. 2), Tubercula, the same that Phymata.
1721. Bailey, Tubercula, (among Surgeons) little Swellings or Pushes.
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].
1872. Nicholson, Palæont., 350. The ribs have distinct capitula and tubercula.