A parfocal lens is a lens that stays in focus when magnification/focal length is changed. There is inevitably some amount of focus error, but small enough to be considered insignificant.
par means EQUAL
Focal = Word
qu'entendez-vous par ... means "what do you mean by...", literally "what do you hear by..."
Divisé par means divide by.
PAR = Photosynthetically Active Radiation
That means that the par for the course is 71. And THAT means that if you get par on every hole it will equal 71.
the root par means equal or equal to depending on the word. This is like in golf when you get a par. means equal to the average.
What does PAR mean on your court paper?Read more: http://wiki.answers.com/What_does_PAR_mean_on_your_court_paper#ixzz1qaB5VbSV
PAR AVION is French for via airmail. Par is French for via (or by means of); avion is French for airplane.
Par is taken as an average. Blow par means less than average, or not so good.
less then par
'The word'