viator UK /vʌɪˈeɪtə/US /vaɪˈeɪt.əɹ/ noun3 •(rare) A wayfarer, traveler. •A person who is subject to a viatical insurance policy or a viatical settlement.[…] the viators are residents of different states, the viatical settlement […] — 2016 •(rare, historical) An apparitor, a summoner: a minor Roman official.The apparitor tribuni was a viator, whose most important function was that of arrest. — 1882 formsviatores · viators