sidereal

== English == === Alternative forms === sideral sidaereal === Etymology === From Latin sīdereus +‎ -al (cf. Latin sīderālis), from sīdus (“star, constellation”), of unknown ultimate origin, likely a substrate language such as Pre-Greek. === Pronunciation === (UK) IPA(key): /saɪˈdɪə.ɹi.əl/ (US) IPA(key): /saɪˈdɪɚ.i.əl/, /sɪˈdɪɚ.i.əl/ or === Adjective === sidereal (not comparable) Of or relating to the stars. (astronomy) Relating to a measurement of time relative to the position of the stars. (astronomy) Relating to a measurement of time relative to the point of the vernal equinox. ==== Derived terms ==== ==== Related terms ==== ==== Translations ==== === Anagrams === realised, resailed, serialed