About the first etymology (heaven/sky), the plural declension is irregular; it follows the masculine II decl. Please refer to:

  • Charlton T. Lewis here (find "plur. caeli" and "caelos" in the page)
  • R. Schoenstene here

RFV discussion: April 2019 edit

See Talk:caelus#RFV discussion: April 2019.
Return to "caelum" page.