hard base

hard base

[′härd ¦bās]
(chemistry)
A Lewis base (electron donor) that has high polarizability and low electronegativity, is easily oxidized, or possesses lowlying empty orbitals; some examples are H2O, HO-, OCH3-, and F-.
(ordnance)
A launching base that is protected against a nuclear explosion.
References in periodicals archive ?
Tenders are invited for Making hard base ramp for cartage of material at 2x110 mw ash dyke , ptpp, parichha.
They would be built by pumping sand atop some hard base made of rock, concrete or other material, he said.
Applications for this new OM grade of TPE are targeted for products where an extra strong hard base material and a soft touch overmolded outer surface are required.
Applications for this OM grade of TPE are targeted for products where an extra strong hard base material and a soft touch overmolded outer surface are required.
There is urgent need for careful comparative analysis, from the operational point of view, of the hard base concept versus the mobility concept.
The pitch itself was difficult, with a soft top layer on a hard base making the ball bounce very high, so with the wind and sun thrown it, it was quite tricky.
Brian Clifford, clerk of the course at Kempton, which has a Polytrack all-weather surface, said there was a greater danger of horses' hooves striking the hard base of a sloppy dirt track such as was in evidence at Monmouth Park on Saturday.
We have fresh snow on a hard base and are experiencing sudden spontaneous avalanches.
But because the water cannot get through the hard base and infill it just sits on top of the ground.
It's as much about the car, and positions on the road are not as important as some other gravel rallies because the stages are softer and sandier with no hard base underneath.
Drops were also performed from 5 m onto a hard base, with function proving before and after.