It means at the same time.
immediately, at this moment, at once
To risk everything for at once.
It means when you get six babies at once
From the Lorax. It seems to represent the practice of not using the environment to its fullest potential, instead using a resource only "Once." And also because once ler means once and and since the once ler did not listen at least once that is why his name is the once ler.
Semi-centennial means once every half-century.
Eleven.
For Once In My Life
answer
Yes; take 400mg all at once.
quondam (adj.): That which once was; Former; Once(uses: referring to the past)
once mean one (past tence of once one)
Briefly examine.
once daily
at once, right away
Overcomes or once
It means for sure
will be ------------------ will be (once more)