1. on call - Adjective
2. on call - Phrase
on call
Available to be summoned.
He spent the weekend on call and couldn't fully relax.
Get the surgeon on call in here right now!
Who is on call tonight?
on-call (not comparable)
(attributive) on call
on-call
"Actually Roseau County has at any one time, half of its snowplow crew home and on call. Source: Internet
All resorts are equipped with medical stations staffed daily with a registered nurse and 24/7 on-call medical personnel. Source: Internet
Anaximander (6th century BC) was the first philosopher who used the term arche for that which writers from Aristotle on call the "substratum". Source: Internet
Brown also said he wanted to have doctors' surgeries open at the weekends, and GPs on call in the evenings. Source: Internet
A paid on-call firefighter with the Chilliwack Fire Department for 38 years, now retired, has dedicated his life in service to the community. Source: Internet
“As it stands today, the 4th SOPS protected engineering maintains 10 satellites around the clock, performing nominal tasks during the day and providing on-call support after hours,” Rogers said. Source: Internet