n. The cardinal number occurring after eighteen and before twenty, represented in Roman numerals as XIX and in Arabic numerals as 19. It is the last/largest of the "teens".
the GNU version of the Collaborative International Dictionary of English
adj. Nine and ten; eighteen and one more; one less than twenty.
n. The number greater than eighteen by a unit; the sum of ten and nine; nineteen units or objects.
n. A symbol for nineteen units, as 19 or xix.
The Century Dictionary and Cyclopedia
Nine more than ten, or one less than twenty: a cardinal numeral.
n. A number equal to the sum of nine and ten, or one less than twenty.
n. A symbol representing nineteen units, as 19, or XIX, or xix.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the cardinal number that is the sum of eighteen and one
adj. being one more than eighteen
Word Usage
"It is a testament to Saint Paul’s success in converting gentiles that my family worshipped at an Episcopal church bearing his name nineteen hundred years later and 4,600 miles away, on Fairmount Boulevard in Cleveland Heights, Ohio."