An offer to buy shares in a corporation (usually above the market price) for cash or securities or both WordNet 3.0 & Open English WordNet

In corporate finance, a tender offer is a type of public takeover bid. Wikipedia

An offer to buy company stock from existing stockholders under specific conditions Wikipedia Disambiguation

public invitation of stockholders by potential acquirers of a public corporation Wikidata

A type of public takeover bid in which a prospective acquirer invites all stockholders of a publicly traded corporation to tender their stock for sale at a specified price during a specified time, subject to the tendering of a minimum and maximum number of shares. Wiktionary