Etymology

octad

oc·tad
O1C3T1A1D2

Today it means: A group of eight things. Full definition →

First used 16th c.
Ask AI about its historyChatGPTClaudePerplexityGoogle AIGrok

The story

From oct- + -ad.

First known use, by meaning

  • from 16th c. hundred million = myriad myriad; 100,000,000 = 10⁸

Etymology from Wiktionary, CC BY-SA 4.0.