bya
Word Rarity
Very rare
Frequency: Zipf frequency 1.86 in modern English
8
Scrabble Score
3
Letters
1
Syllables
3
Unique Chars
Meaning
symbol
Abbreviation of billion years ago (A symbol for a unit of measure.)
symbol
Alternative spelling of bya (“billion years ago”).
symbol
Alternative spelling of bya (“billion years ago”).
Example Sentences
- "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 appear."