English

Adjective

Maastrichtian ‎(comparative more Maastrichtian, superlative most Maastrichtian)

1. Of or pertaining to Maastricht.
2. Of or pertainig to the Maastrichtian geological period.
3. in the ICS geologic timescale, the latest age or upper stage of the Late Cretaceous epoch or Upper Cretaceous series, the Cretaceous period or system, and of the Mesozoic era or erathem

Noun

Maastrichtian ‎(plural Maastrichtians)

1. (countable) Someone from Maastricht

Proper noun

Maastrichtian

1. The dialect of the Limburgish language as spoken in Maastricht
2. (geology) the last stage of the Cretaceous period, preceded by the Campanian and succeeded by the Danian period.