cap

²cap

verb

cappedcap·ping

Definition of CAP

transitive verb

1

: to invest (a student nurse) with a cap as an indication of completion of a probationary period of study

2

: to cover (a diseased or exposed part of a tooth) with a protective substance

3

: to form a chemical cap on <the capped end of a messenger RNA>

intransitive verb

: to form or produce a chemical cap