#afilo
- Aphyllo- — A combining form (prefixoid) used to construct neologisms in natural sciences, meaning 'absence of leaves' or 'leafless'. Originating from ancient Greek, it serves to describe taxonomic structures, plants, or plant organs that naturally or due to evolutionary traits do not develop leaves.
- Aphyllopodous — A specialized term used to describe a plant, organ, or vegetative axis whose peduncle, support, or structural base is completely devoid of leaves or foliar appendages. In plant morphology, the aphyllopodous trait represents an evolutionary adaptation to reduce water loss.
- Antipyogenic — Combating, preventing, destroying, or halting the formation of pus and the development of pyogenic bacteria, such as staphylococci or streptococci, responsible for suppurative tissue infections. This type of structural agent stimulates cellular cleansing, reduces inflammation, and blocks microbial multiplication in open infectious foci.
- Aureus — Latin taxonomic adjective meaning 'golden', used as a specific epithet in binomial nomenclature (famous for Staphylococcus aureus, named after the yellow color of its colonies on agar plates). In numismatics, it is a masculine noun designating the famous Roman gold coin struck regularly starting from the 1st century BC.