30.

German

German numbers ^(edit)

		300
←  20	←  29	30	31  →	40  →
		3
Cardinal (Germany, Austria): dreißig     Cardinal (Switzerland, Liechtenstein): dreissig     Ordinal (Germany, Austria): dreißigste     Ordinal (Switzerland, Liechtenstein): dreissigste     Sequence adverb (Germany, Austria): dreißigstens     Sequence adverb (Switzerland, Liechtenstein): dreissigstens     Ordinal abbreviation: 30.     Adverbial (Germany, Austria): dreißigmal     Adverbial (Switzerland, Liechtenstein): dreissigmal     Adverbial abbreviation: 30-mal     Multiplier (Germany, Austria): dreißigfach     Multiplier (Switzerland, Liechtenstein): dreissigfach     Multiplier abbreviation: 30-fach     Fractional (Germany, Austria): Dreißigstel     Fractional (Switzerland, Liechtenstein): Dreissigstel     Polygon (Germany, Austria): Dreißigeck     Polygon (Switzerland, Liechtenstein): Dreissigeck     Polygon abbreviation: 30-Eck     Polygonal adjective (Germany, Austria): dreißigeckig     Polygonal adjective (Switzerland, Liechtenstein): dreissigeckig     Polygonal adjective abbreviation: 30-eckig
German Wikipedia article on 30

Adjective

30. (indeclinable)

1. (ordinal number) Abbreviation of dreißigste. 30th, thirtieth

Icelandic

Icelandic numbers ^(edit)

		300
←  20	←  29	30	31  →	40  →
		3
Cardinal: þrjátíu     Ordinal: þrítugasti     Ordinal abbreviation: 30.     Fractional: þrítugasti

Adjective

30. (indeclinable)

1. 30th