The ordinal number matching the number 17 in a series.(noun)
One of 17 equal parts.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "seventeenth" in a sentence
"Then the telescope will reveal stars still fainter and fainter, down to what we term the seventeenth or eighteenth magnitudes, or even lower still."
"The Agricultural Revolution that began in seventeenth-century England radically increased the amount of food that could be grown on an acre of land, and the same happened in the 1960s and 1970s, when fertilizer and hybridized seeds arrived in India and Mexico."
"Hand-made carpets also started to appear in seventeenth century paintings by Rembrandt, Rubens and Velazquez, often in formal portraits of the kings and noblemen who could have afforded them."