apophysis
Concise Oxford English Dictionary © 2008 Oxford University Press:
apophysis /əˈpɒfɪsɪs/
▶noun (pl. apophyses) chiefly Zoology & Anatomy a natural protuberance or swelling, especially one on a bone for the attachment of muscles.
– derivatives
apophyseal adjective.
apophyseal adjective.
– origin C16: mod. L., from Gk apophusis ‘offshoot’.
'apophysis' also found in these Oxford entries:

