different between empyrean vs sidereal

English

Etymology

From Latin emp?reus, from Ancient Greek ???????? (empúrios), from ?? (en, “in”) + ??? (pûr, “fire”) (whence English pyre).

Pronunciation

• IPA^(key): /?m?pa???i?n?/, /?m?p??i.?n/

Noun

empyrean (plural empyreans)

1. (historical) The region of pure light and fire; the highest heaven, where the pure element of fire was supposed by the ancients to exist: the same as the ether, the ninth heaven according to ancient astronomy.

Related terms

• pyre

Adjective

empyrean (not comparable)

1. Of the sky or the heavens; celestially refined.
   • 1700, Matthew Prior, Carmen Saeculare

     Yet upward she [the goddess] incessant flies;
     Resolv’d to reach the high empyrean Sphere.

Synonyms

• empyreal

Translations

References

• empyrean in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
• William Dwight Whitney and Benjamin E[li] Smith, editors (1914) , “empyrean”, in The Century Dictionary: An Encyclopedic Lexicon of the English Language, volume II (D–Hoon), revised edition, New York, N.Y.: The Century Co., OCLC 1078064371.

Further reading

• empyrean on Wikipedia.Wikipedia

English

Alternative forms

• sideral

Etymology

From Latin s?dereus, from s?dus (“star”).

Pronunciation

• (UK) IPA^(key): /sa??d???.i.?l/
• (US) IPA^(key): /sa??d??.i.l?/
• or

Adjective

sidereal (not comparable)

1. Of or relating to the stars.
   • 1919, Hector Macpherson, S.Chapman (series editor), Men of Science: Herschel, Chapter V,

     The field of sidereal astronomy, therefore, was virtually untrodden when, shortly after the beginning of his telescopic work, Herschel began his first review of the heavens.

2. (astronomy) Relating to a measurement of time relative to the position of the stars.
   • 1903, Percival Lowell, The Solar System, Chapter I,

     Then, from a sufficient number of observations of synodic periods to give their mean, we obtain the sidereal period, or period with reference to the stars.

3. (astronomy) Relating to a measurement of time relative to the point of the vernal equinox.

Derived terms

Related terms

Translations

Anagrams

• realised, resailed, serialed