Main Entry: ²cap

Function: verb

Inflected Form(s): capped; cap·ping

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