Definition of periost in English:

periost

noun

Anatomy Zoology
  • Periosteum. Formerly also: †= periostracum; compare "periosteum" (obsolete).

Origin

Late 18th century; earliest use found in Emanuel Mendes da Costa (1717–1791), naturalist. From French périoste.

Pronunciation

periost

/ˈpɛrɪɒst/