| Word | Definitions | Synonyms |
|---|---|---|
| auxetic | (adjective) of or relating to growth by auxesis | - |
| auxiliary | (adjective) functioning in a supporting capacity | Synonyms: subsidiary, supplemental, supplementary |
| (adjective) furnishing added support | Synonyms: accessory, adjunct, adjuvant, ancillary, appurtenant | |
| auxinic | (adjective) relating to or containing auxins | - |