Word.ws English Dictionary

bya

bya symbol: synonym of Gya (“billion years ago (short scale): 10⁹ years ago”).

Symbol (1)

bya

  1. (usually) Synonym of Gya (“billion years ago (short scale): 10⁹ years ago”).
    • The first (oldest) unit of time is the Precambrian Supereon, which covers much of Earth's history from its origins roughly 4.55 bya to 545 mya. Very primitive, one-celled life-forms arose as early as 4.0 bya and near the end of the era (570 mya) the oldest known fossils of multi-celled organisms...2015, Joyce A. Quinn, Susan L. Woodward, “Introduction”, in Earth's Landscape: An Encyclopedia of the World's Geographic Features, volumes I: A–L, Santa Barbara, CA: ABC-CLIO, →ISBN, page xxxi
    Synonyms:
    Gya
  2. (dated, uncommon) billion years ago (long scale):10¹² years ago: a trillion years ago (short scale).

Symbol (2) capitalized: BYA

BYA

  1. (alternative, usually) Alternative spelling of bya (“billion years ago (short scale): 10⁹ years ago”).
  2. (alternative, dated, uncommon) Alternative spelling of bya (“billion years ago (long scale):10¹² years ago: a trillion years ago (short scale)”).

Symbol (3) capitalized: Bya

Bya

  1. (alternative, usually) Alternative spelling of bya (“billion years ago (short scale): 10⁹ years ago”).
  2. (alternative, dated, uncommon) Alternative spelling of bya (“billion years ago (long scale):10¹² years ago: a trillion years ago (short scale)”).

Synonyms of bya

Questions about bya

What does bya mean?
Bya means synonym of Gya (“billion years ago (short scale): 10⁹ years ago”).
What part of speech is bya?
Bya is a symbol.

Words near bya in the dictionary

  1. by-way
  2. by-ways
  3. by-works
  4. by-your-leave
  5. by-your-leaves
  6. bya
  7. Byabarra
  8. Byadbo Wilderness
  9. Byaduk
  10. Byaduk North
  11. byakangelicin

Source and license

Adapted from Wiktionary: bya (page history and authors); BYA (page history and authors); Bya (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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Cite this entry: “bya.” Word.ws, https://word.ws/bya. Based on Wiktionary, CC BY-SA 4.0.