1. multiselect - Noun
2. multiselect - Verb
multiselect (third-person singular simple present multiselects, present participle multiselecting, simple past and past participle multiselected)
(computing, graphical user interface) To select multiple items as part of a single selection.
multiselect (plural multiselects)
(computing, graphical user interface) A control or widget that allows multiple items to be selected.