initiali·ni·tial1 /ɪˈnɪʃəl/ adjectiveadj [only before a noun] happening first or at the beginning of an event or processEach portfolio has a minimum initial investment of $3,000.
the initial capital required for the project (=the money needed to start it)
Somatogen sold two million shares in its initial public offering (=when its shares were made available to the public for the first time).