411 REFERENCE · Wiktionary
Hauptreihe
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
German
Etymology
de :af haupt- Reihe
de haupt Reihe
Pronunciation
de De-Hauptreihe.ogg <<Germany>> (<<Berlin>>)
Noun
f
de astronomy main sequence
Declension
f