Preceding all others of a series or kind; the ordinal of one; earliest.
Of or belonging to a first family.
Most eminent or exalted; most excellent; chief; highest.
For the first time.
Before anything else; firstly.
Now.
first base
A first-edition copy of some publication.
A fraction whose (integer) denominator ends in the digit 1.
The first gear of an engine.
Something that has never happened before; a new occurrence.
A first-class honours degree.
The person or thing in the first position.
Following in order or in time.
Next to, or facing the main stem or axis.
Relating to or denoting presentation of a fetus in which the rear or caudal end is nearest the cervix and emerges first at birth.
The hinder parts of the body.
The probability that a hypothesis is true (calculated by Bayes' theorem).