adj, noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Such a substance rare

Adjective

1. 1
   Relating to any substance that is endogenous to the body or to an ecological system rare

Antonyms

All antonyms

xenobiotic

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