| Word | Definitions | Synonyms |
|---|---|---|
| acicula | (noun) a needlelike part or structure of a plant or animal or crystal; as a spine or bristle or crystal | - |
| acicular | (adjective) narrow and long and pointed; as pine leaves | Synonyms: acerate, acerose, needle-shaped |
| aciculate | (adjective) related to plants or animals or crystals having aciculae or needlelike parts | - |
| boracic | (adjective) of or relating to or derived from or containing boron | Synonyms: boric |
| thoracic | (adjective) of or relating to the chest or thorax | Synonyms: pectoral |