Noun There is one k in “book.” The word ends in k. She earned a salary of $30K. The program uses 350K of disk space. The pitcher had more than 10 Ks in his last game.
Word History
Etymology
Symbol
New Latin kalium
First Known Use
Noun
before the 12th century, in the meaning defined at sense 1a
Time Traveler
The first known use of k was before the 12th century