Definition of overallotment in English:

overallotment

noun

Finance
  • The selling of securities additional to those available in the first issue of a company's stock.

Origin

1980s; earliest use found in PR Newswire. From over- + allotment.

Pronunciation

overallotment

/ˌəʊv(ə)rəˈlɒtm(ə)nt/