Found 2 items, similar to auxin.
English → English (WordNet) Definition: auxin auxin n : a plant hormone that promotes root formation and bud growth
English → English (gcide) Definition: auxin auxin \aux"in\ n. 1. a substance which, in small concentrations, promotes root formation, bud growth, or certain other processes such as fruit ripening or leaf drop in plants. [WordNet 1.5 +PJC]