hyosternal, a. and n. Anat.
(haɪəʊˈstɜːnəl)
[f. hyo- + sternal.]
a. adj. Pertaining to the hyoid apparatus together with the sternum or breast-bone. b. n. The second pair of plates in the plastron of a turtle, also called the hyoplastron.
| 1835–6 Todd Cycl. Anat. I. 284/1 Two anterior lateral pieces, the hyosternals. 1839–47 Ibid. III. 838/1 This central piece is bounded..posteriorly by another pair named the hyosternal. 1870 Rolleston Anim. Life 28 The hyosternal processes are continued. |