apophysis /əˈpɒfɪsɪs/

a

I. noun

1.
[Zoology]
[Anatomy] a natural protuberance from a bone, or inside the shell or exoskeleton of a sea urchin or insect, for the attachment of muscles.
2.
[Botany] a swelling at the base of the sporangium in some mosses.
3.
[Geology] a small offshoot extending from an igneous intrusion into the surrounding rock.
II. derivatives

apophyseal /ˌapəˈfɪsɪəl /
adjective


– origin late 16th cent.: modern Latin, from Greek apophusis ‘offshoot’, from apo- ‘from, away’ + phusis ‘growth’.

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