#Apennines
- Abruzzi — A historical and alternative plural name previously used for the current Abruzzo administrative region in central Italy, located east of Rome, between the Apennine Mountains and the Adriatic coast; it is renowned for its vast national parks, the Gran Sasso mountain massif, and its untouched medieval heritage.
- Apennines — A major mountain range located in Italy, stretching for approximately 1200 kilometers along the entire length of the Italian Peninsula, forming its geographical and hydrographic backbone. This mountain system, characterized by spectacular karst relief and latent seismic activity, reaches its maximum altitude in the Gran Sasso massif.
- Apennine — The feminine form of apeninic (Apennine); pertaining to the Apennine Mountains or the surrounding regions of the Italian Peninsula, relating to the geological structure, flora, fauna, or climatic features of this European mountain range.
- Apenninum — A Latin specific epithet used in botanical and zoological taxonomy to designate plant or animal species that are native, endemic, or discovered in the region of the Apennine Mountains in Italy (e.g., Ranunculus apenninus or Helianthemum apenninum). This regularized geographic descriptor serves to precisely classify European mountain biodiversity according to international nomenclature codes.
- Aspromonte — A mountain massif located in the Calabria region of southern Italy, forming the southern tip of the Apennines; famous both for its rugged terrain, dense beech forests, and the national park of the same name, and for its historical significance, being the site where the famous Battle of Aspromonte took place in 1862, during which regular Italian troops wounded and captured Giuseppe Garibaldi to stop his unauthorized march on Rome.