Words similar to first

Example sentences for: first

How can you use “first” in a sentence? Here are some example sentences to help you improve your vocabulary:

In the implementation in PKQuest, a 2- exponential fit is found first, and this fit is used to estimate the initial values for the 3-exponential fit.
At first, Harvard officials excused the ploy by saying that if community members had known they were dealing with an institution worth $9 billion, they would have demanded exorbitant premiums.
On September 7, the Predator flew for the first time over Afghanistan.
Now, first of all, a truly determining propensity is a requirement.
The levels of ERK1/2 were similar during the first 6 hours, then dropped between 12-24 hours after treatment.