Phrase guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
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noun
A stratigraphic unit of distinctive lithology with a wide geographical extent used in stratigraphic correlation.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Synonyms: chronohorizon, key bed, marker bed
Antonyms: none provided
History
No etymology was provided for this word.
