American track
Amtrak stands for American Track it doesn't really have a significant meaning and is usually not written in all caps its more of just a name "Amtrak".
Yes, abbr is the abbreviation of the word abbreviation or abbreviate.
The abbreviation of NO i believe is New Orleans
Max is an abbreviation for maximum.
E.T. is an abbreviation for extra-terrestrial.
The abbreviation for teaspoon is 'tsp'
Do you mean, what is temp. the abbreviation for? Temperature. Temporary.
The abbreviation of Engg. means Engineering.
amtrak .com
At the amtrak station.
Sitcom is an abbreviation of Situation Comedy.
Inj. abbreviation means: injection