prebiotic

[ pree-bahy-ot-ik ]

adjective

1. Also . existing or occurring before life, or serving as a precursor to it:

   These molecules played a critical role in the prebiotic evolution of life.

   Even if habitable conditions existed only briefly, relics of prebiotic chemistry or rudimentary life still might remain.

2. being, having, or relating to a substance containing dietary fiber that stimulates the growth or activity of beneficial bacteria in the gastrointestinal tract:

   Oats contain the prebiotic fiber beta-glucan.

   Prebiotic food sources include bananas, leeks, onions, chicory, asparagus, and artichoke.

noun

1. a substance containing dietary fiber that stimulates the growth or activity of beneficial bacteria in the gastrointestinal tract: Compare probiotic ( def 1 ).

   Our group has begun to develop strategies for incorporating prebiotics into convenience foods.

prebiotic

/ ˌpriːbaɪˈɒtɪk /

adjective

1. occurring or existing before the emergence of life

Word History and Origins

Origin of prebiotic¹

First recorded in 1950–55 prebiotic fordef 1, 1990–95 prebiotic fordef 2; pre- ( def ) + biotic ( def )