pk

1 of 3

abbreviation (1)

1

park

2

peak

3

peck

4

pike

PK

2 of 3

noun

ˌpē-ˈkā 

: psychokinesis

PK

3 of 3

abbreviation (2)

preacher's kid

Word History

First Known Use

Noun

1943, in the meaning defined above

Medical Definition

pK

1 of 2 noun

ˈpē-ˈkā 

: 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

ˈpē-ˈkā 

: psychokinesis