The space between the stars and the planets is an example of the firmament.
Origin of firmamentMiddle English from Old French from Ecclesiastical Late Latin firmamentum from L, a strengthening, support from firmare: see firm
Origin of firmamentMiddle English from Old French from Late Latin firmāmentum from Latin support from firmāre to strengthen ; see firm 2.
- (uncountable) The vault of the heavens; the sky.
- And God said, "Let there be a firmament in the midst of the waters, and let it separate the waters from the waters."
- The field or sphere of an interest or activity.
- the international fashion firmament
- (archaic) In the geocentric Ptolemaic system, the eighth sphere, which carried the fixed stars.
English from the 13th century. From Latin firmāmentum (from firmō (“strengthen”), from firmus (“firm”)), literally "that which strengthens or supports". The term is coined in the Vulgata in imitation of LXX στερέωμα (stereōma, “firm or solid structure”), which in turn translates Hebrew רקיע, strictly speaking a mistranslation, as the original Hebrew term meant "expanse", from the root רקע "to spread out", which in Syriac had acquired the meaning "to make firm or solid".