paraffinic
paraffinicity
paraffinum
paraformaldehyde
paragraph
para-hydroxybenzoic
para-isopropyl
paraldehyde
paralinear
parallax
  parallel
parallel-baffled
parallel-burn
parallel-chord
parallel-disk
parallelepiped
parallel-flow
paralleling
parallelism
parallel-jaw
parallel-lay

    parallel system of reservoirs

    система водохранилищ на притоках