Word.ws English Dictionary

K-T boundary

K-T boundary noun: the geological signature of the transition between the Cretaceous period and the Tertiary period 65.5 million years ago.

Noun

K-T boundary

  1. The geological signature of the transition between the Cretaceous period and the Tertiary period 65.5 million years ago.
  2. This transition is marked worldwide by a layer of material that contains a high level of iridium.

Forms of K-T boundary

alternative formK/T boundary
alternative formKT boundary

Questions about K-T boundary

What does K-T boundary mean?
K-T boundary means the geological signature of the transition between the Cretaceous period and the Tertiary period 65.5 million years ago.
What part of speech is K-T boundary?
K-T boundary is a noun.

Words near K-T boundary in the dictionary

  1. K-swap
  2. K-swapped
  3. K-swapping
  4. K-swaps
  5. K-T
  6. K-T boundary
  7. K-T extinction event
  8. K-theory
  9. K-tool
  10. K-tools
  11. K-Town

Source and license

Adapted from Wiktionary: K-T boundary (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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