oil
oil-control-layer
oil-filled
oil-film
OLCA
OLCD
omega
omission
omnibearing
omnibearing-distance
  omnidirectional
omnidistance
omnigraph
omnipole
omnirange
on
on-axis
on-board
on-boresight
on-chip
oncoming-wave

    omnidirectional radiation

    ненаправленное излучение