adj, adv ·Rare ·Advanced level

Definitions

Adjective

1. 1
   A billion times so not-comparable

   "a billionfold dilution"

Adverb

1. 1
   In a billionfold way; by a billion degrees; on a scale of a billion not-comparable

   "multiply something a billionfold"

Synonyms

All synonyms

thousand-millionfold

Example

More examples

"multiply something a billionfold"

Etymology

From billion + -fold.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.