ongoing
on-hand
on-lending
on-line
on-looker
only
on-order
on-peak
onshore
on-site
  on-the-job
on-the-land
on-the-premise
on-the-road
on-the-site
OPEC-push
open
open-air
open-book
open-end
opening

    on-the-job training

    обучение по месту работы, подготовка без отрыва от производства