Meaning & use
thirteenth
The ordinal number matching thirteen in a sequence, coming immediately after twelfth.
See it in a sentence
The office is located on the thirteenth floor of the building.
Today marks the thirteenth day since the project began, and morale is finally improving.
A note on using this word
Written as a numeral, thirteenth is abbreviated '13th'; some buildings skip the number due to superstition around the figure.
Words with a similar meaning
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