lower boundaries

A form of lower boundary — The most ancient time encompassed by a given geological period.

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Meanings

noun
  1. pluralplural of lower boundary
Cite this entry
APA

lower boundaries. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/lower%20boundaries

MLA

“lower boundaries.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/lower%20boundaries. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “lower boundaries,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/lower%20boundaries.

Source: lower boundaries on Wiktionary, CC BY-SA 4.0.