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Pronunciation varies by accent · noun
A constituent of banded bituminous coal consisting of a horizontal glossy band of friable material..
The caking behaviour of vitrain and clarain could be improved after the coal has been picked out.
In order to measure relatively accurately the activation energy of coal, and to exclude the disturbance from coal samples, the hand-picked banded vitrains in bright coal are adopted as experimental samples (Table 1).
Thus, it may be concluded that a lower viscosity of plastic vitrain grains facilitates pores to grow and coalesce and grains to stick to one another to create intergrain pores.
Use vitrain when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Vitrain means A constituent of banded bituminous coal consisting of a horizontal glossy band of friable material..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
The caking behaviour of vitrain and clarain could be improved after the coal has been picked out.
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