系

Work of art, literature, music, etc. name

Kokushi Taikei (history text; orig. ed. by Taguchi Ukichi, pub. 1897-1904; rev. ed. by Kuroita Katsumi, pub. 1929-1964)

Historical term

White Russian emigre; White Russian exile

Historical term

White Russian emigre; White Russian exile

Obsolete term; Astronomy

extragalactic nebula

Rare term

alkyne

Rare term

alkene; olefin; olefine

Rare term

alkane

Obsolete term; Astronomy

galactic nebula

Rare term; Astronomy

exomoon; extrasolar moon