subbituminous
- noun
- /ˌsʌbˌbɪtʃəˈmɪnəs/
- Specialized
:
carbón subbituminoso
- Compared to bituminous coal, subbituminous coal produces less energy but is still widely used as fuel.
Examples
-
The power plant uses subbituminous coal for energy.
-
The subbituminous coal burns efficiently.
-
The power plant relies on subbituminous to generate electricity for the entire region.
-
Compared to bituminous coal, subbituminous produces less energy but is still widely used.
-
Large reserves of subbituminous are found in the western United States.
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The power plant relies on subbituminous coal to generate electricity for the entire region.
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Large reserves of subbituminous coal are found in several states across the western United States.
How Mature
1
9.8
- Specialized
1
9.5
- Specialized
- Specialized
1
8.7
Surface Forms
Morphology
subbituminous = bituminous (transparent) = sub + bituminous
The noun sense denotes the coal type; the morphological relation is the same productive prefixation of 'sub-' to 'bituminous'.
Etymology
Subbituminous breaks into sub- ('under' or 'less than') and bituminous, from bitumen ('tar' or 'tar-like'), so the word literally means coal that is 'less tarry' than bituminous coal. That is why as a noun subbituminous names a type of coal often used as fuel because it is lower in rank than bituminous coal.