(history) the German Democratic Republic

(history) the Federal Republic of Germany (official name of former West Germany) / the Federal Republic of Germany (official name of current Germany)

ドイツ連邦共和国: the Federal Republic of Germany (West Germany from 1949-1990, Germany as a whole after 1990)

(mathematics) geometrical

"Historical kana usage", a prescriptive method of using kana to write Japanese. Devised in the Edo period by Keichū (契沖) and taught in schools until 1946, it aims to be etymologically faithful and reflects earlier stages of the language (Heian period and earlier).

humanitarian

hostile takeover

experimental study

impractical; unpractical

unrealistic