What is the definition or description of: aspiration pneumonia?

Entry into lungs: Caused by entry of foreign material coming either from throat or stomach into the airways. The acidic stomach contents or accidentally ingested hydrocarbons induce a chemical pneumonitis, while aspiration of infectious organisms with secretions can also cause infection. Aspiration of mineral oil causes lipoid pneumonia. Treated with antibiotics & correction of underlying cause of aspiration.

Inhaling liquid: Our breathing and digestive systems both start from the throat. When we eat or drink something, our body stops our breathing for a moment until we finish swallowing. Then we breathe again. When we breathe with liquid in our throat, we are likely to suck the liquid into the lungs with the air. This is called aspiration. If it is irritating or infected, the problem is called aspiration pneumonia.