From Latin flÅ«ctuÄns, flÅ«ctuant- , present participle of flÅ«ctuÄre, to fluctuate; see fluctuate. adjective. 1  Subject to change or variation: variable: fluctuant oil prices. 2  Medicine Capable of being moved or compressed.3  Used of an abnormal mass such as a tumor or abscess. 4  Moving in waves.djective. 1  Subject to change or variation: variable: fluctuant oil prices. 2  Medicine Capable of being moved or compressed. 3  Moving in waves.
Like Gulf Oil, Texaco was founded in 1901 after a major oil strike at Spindletop near Beaumont, Texas. The company was officially incorporated as The Texas Company in 1902 and the word Texaco was first used as a brand (for asphalt, not gasoline) in 1903.
A history professor with a love of food shares the best explanation on the subject; he says the taco was likely born from necessity in the 1800s by poor silver miners, and spent the next 100 years spreading through tiny towns and street food stalls throughout Mexico.