Definition of episternal in US English:

episternal

noun

Zoology
  • Episternum. Now rare.

adjective

Zoology
  • Located anterior to or above the sternum; of, relating to, or of the nature of an episternum.

Origin

Early 19th century (in an earlier sense). As noun in sense A. 1 from French épisternal, noun, use as noun of épisternal, adjective.

Pronunciation

episternal

/ˌɛpɪˈstəːnl/