Portlandian
name
name ·Rare ·Advanced level
Definitions
Proper Noun
- 1 The Tithonian stage or age, now considered strata about 150 million years old. archaic
Etymology
From Portland + -ian. Named after the Isle of Portland in Dorset where the strata are exposed and have been extensively worked.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.