凝固汽油彈（napalm）是幾種戰爭用可燃液體的總稱，大多以膠狀汽油為主成分，製造成炸彈彈體。準確地說，“napalm”一詞字面上指的是凝固汽油彈中用來與汽油混合以產生膠質燃劑的黏稠劑成分。
凝固汽油彈此詞是由它的研發團隊──路易·菲塞領導，哈佛大學的一群化學家──所命名，是naphthene（環烷烴）的鋁鹽與palmitic acid（棕櫚酸）的混成詞，製造凝固汽油彈時會將這兩種成分加入可燃物質使其膠質化。
Napalm is a general term for several combustible liquids used in warfare. Most of them are made of colloidal gasoline as the main component of bombs. To be precise, the term "napalm" literally refers to the viscous component in napalm that is mixed with gasoline to produce a colloidal fuel.
The term napalm was named by its research and development team ─ ─ led by Louis Fisser, a group of chemists at Harvard University ─ and is a combination of naphthene (naphthene) aluminum salt and palmitic acid (palmitic acid). When making napalm bombs, these two components are added to combustible substances to make them gelatinized.

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