Asker's rating. 1  Ford Xlt. 2  Ford came out with the XL trim package originally in April of 1962 for the Galaxie & Fairlane models. 3  Back in the day before you had your choice of 100 different trip levels, Ford had the XL, XLT, XLT Lariat trim levels. 4  Extra Luxury Trim. 5  What Does Xlt Mean.
The weak hypercharge in particle physics is a quantum number relating the electric charge and the third component of weak isospin.
Tachycardia = Too fast. A heart rate of more than 100 beats per minute (BPM) in adults is called tachycardia. What's too fast for you may depend on your age and physical condition.trial or Supraventricular tachycardia (SVT) is a fast heart rate that starts in the upper chambers of the heart. Some forms are called paroxysmal atrial tachycardia (PAT) or paroxysmal supraventricular tachycardia (PSVT).