firmaments

/F ER1 M AH0 M AH0 N T S/
noun
  1. 1

    (usually uncountable) The vault of the heavens, where the clouds, sun, moon, and stars can be seen; the heavens, the sky.

  2. 2

    The field or sphere of an activity or interest.

    โ€œthe international fashion firmamentโ€

  3. 3

    In the geocentric Ptolemaic system, the eighth celestial sphere which carried the fixed stars; (by extension) any celestial sphere.

  4. 4

    (obsolete except biblical) The abode of God and the angels; heaven.

  5. 5

    A piece of jewellery worn in a headdress with numerous gems resembling stars in the sky.

  6. 6

    A basis or foundation; a thing which lends strength or support.

  7. 7

    The act or process of making firm or strengthening.

Synonyms

Source: https://en.wiktionary.org/wiki/firmament, https://en.wiktionary.org/wiki/firmaments