Acting the part of a visitor; paying visits; visiting.n. One who visits; one who goes or comes to see another; one who is a guest in the house of a friend; a visitor.n. In ornithology, a migratory bird which comes to and stays in a place or region during a part of the year: opposed to resident: as, the snowy owl is a winter visitant from the north in the United States. Rare or irregular visitants are termed stragglers. See straggler, 2.n. [capitalized] A member of a Roman Catholic order of nuns, founded at Annecy in Savoy by Francis de Sales and Mme. de Chantal in 1610.