pk

1 of 3

abbreviation (1)

1
park
2
peak
3
peck
4
pike

PK

2 of 3

noun

PK

3 of 3

abbreviation (2)

preacher's kid

Word History

First Known Use

Noun

1943, in the meaning defined above

Time Traveler
The first known use of pk was in 1943

Dictionary Entries Near pk

Cite this Entry

“Pk.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pk. Accessed 27 Feb. 2024.

Medical Definition

pK

1 of 2 noun
: the cologarithm of the dissociation constant K or −log K that serves as a convenient measure of the strength of an acid
K for acetic acid is 0.000018 or l.8 × 10−5 from which pK is (5 − 0.25) or 4.75
compare ph

PK

2 of 2 noun

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