punctum saliens

English

Borrowed from Latin punctum saliēns (“leaping point”), attributed to Volcher Coiter or Ulysses Aldrovandi, after a Latin translation of Aristotle's History of Animals (book 6, part 3).

punctum saliens (uncountable)

(biology, chiefly historical) The primordial heart in an embryo, appearing as a throbbing point.
- 1846, The Lancet London: A Journal of British and Foreign Medicine, Surgery, Obstetrics, Physiology, Chemistry, Pharmacology, Public Health and News, page 382:
  The rudiments of the brain, eyes, punctum saliens, spinal cord, six vertebrae, shades of ribs, a dark knob at the cephalic extremity of spine, and an oval expansion at the caudal extremity.
(figurative) Starting point, source; gist.
Synonyms: see Thesaurus:gist
- 1830, The American Journal of the Medical Sciences, page 67:
  In him we discover the punctum saliens of a principle which is the master spirit of animal and vegetable motion, the ruling power of chemical science, the governing influence of atmospheric composition, the presiding genius of respiration, […]