in-service

adjective

in-ser·​vice ˈin-ˈsər-vəs 

1

: going on or continuing while one is fully employed

in-service teacher education workshops

2

: of, relating to, or being one that is fully employed

in-service police officers

Examples of in-service in a Sentence

Recent Examples on the Web

Amazon Air’s in-service fleet numbers around 104 aircraft in 2026, up from 14 in 2016. — Miami Herald Staff, Miami Herald, 8 Sep. 2026

Amazon has roughly 104 jets in its in-service Amazon Air fleet, with 63 of them being Boeing 767 planes. — Glenn Taylor, Footwear News, 8 Sep. 2026

During the same period, ambulance in-service hours fell by 390 hours per day — the equivalent of about 16 fewer 24-hour ambulances citywide. — Voice Of The People, New York Daily News, 9 Aug. 2026

This study addresses the research gap by asking public school principals to share information about their in-service learning opportunities, including the frequency of those opportunities, their subject matter, and their usefulness. — Mac Murray, Hartford Courant, 10 July 2026

Word History

First Known Use

1928, in the meaning defined at sense 1

Rhymes for in-service

• disservice
• preservice
• interservice
• nervous
• nervus