different between zygapophysis vs apophysis

English

Etymology

Ancient Greek ????? (zugón, “yoke”) + apophysis.

Pronunciation

• IPA^(key): /?za????p?f?s?s/

Noun

zygapophysis (plural zygapophyses)

1. (anatomy) One of the articular processes of a vertebra, of which there are usually four, two superior and two inferior.

English

Etymology

Ancient Greek ???????? (apóphusis, “offshoot”), from ??? (apó) + ??? (phú?, “to bring forth”), from Proto-Indo-European *b?uH- (“to exist, to grow”). Equivalent to apo- +? -physis

Pronunciation

• IPA^(key): /??p?f?s?s/

Noun

apophysis (plural apophyses)

1. (anatomy) A natural outgrowth, swelling or enlargement, usually of an organism; A protuberance on a bone.
   • 1836, E. A. Poe, Maelzel's Chess-Player

     Every bone in the real duck had its representative in the automaton, and its wings were anatomically exact. Every cavity, apophysis, and curvature was imitated, and each bone executed its proper movements.

2. (botany) The external part of a cone scale.
3. (geology) A branch of a dike or vein.
   • 1980, U.S. Government Printing Office, Geological Survey Professional Paper, Volume 1119

     Minor palingenetic magmas probably were generated at this time and intruded the mantling rocks in the form of small sills and apophyses; [...]

Derived terms

Translations