Definition of black ash in English:

black ash

noun ˌblak ˈaʃ

North American

A North American ash, Fraxinus nigra (formerly called F. sambucifolia), found in wetlands in the north-eastern United States and eastern Canada; (also) the timber of this tree, which can be separated into flexible strips by pounding and is used in basket-making and cooperage.

noun ˌblak ˈaʃ

Chemistry historical

In the manufacture of sodium carbonate by the Leblanc process: a mixture of sodium carbonate and calcium sulphide formed at an intermediate stage, which is washed (lixiviated) with water to obtain the pure carbonate.

Origin

Late 17th century. From black + ash. The reason for the name is uncertain: it may refer to the tree's dark brown heartwood, or it may refer to the appearance of the leaves, in contrast to those of the white ash
early 19th century; earliest use found in The Repertory of Arts. From black + ash.

Definition of black ash in US English:

black ash

nounˌblak ˈaʃ

North American

A North American ash, Fraxinus nigra (formerly called F. sambucifolia), found in wetlands in the north-eastern United States and eastern Canada; (also) the timber of this tree, which can be separated into flexible strips by pounding and is used in basket-making and cooperage.

nounˌblak ˈaʃ

Chemistry historical

In the manufacture of sodium carbonate by the Leblanc process: a mixture of sodium carbonate and calcium sulphide formed at an intermediate stage, which is washed (lixiviated) with water to obtain the pure carbonate.

Origin

Late 17th century. From black + ash. The reason for the name is uncertain: it may refer to the tree's dark brown heartwood, or it may refer to the appearance of the leaves, in contrast to those of the white ash<br>early 19th century; earliest use found in The Repertory of Arts. From black + ash.

词汇	black ash
释义	Definition of black ash in English: black ash noun ˌblak ˈaʃ North American A North American ash, Fraxinus nigra (formerly called F. sambucifolia), found in wetlands in the north-eastern United States and eastern Canada; (also) the timber of this tree, which can be separated into flexible strips by pounding and is used in basket-making and cooperage. noun ˌblak ˈaʃ Chemistry historical In the manufacture of sodium carbonate by the Leblanc process: a mixture of sodium carbonate and calcium sulphide formed at an intermediate stage, which is washed (lixiviated) with water to obtain the pure carbonate. Origin Late 17th century. From black + ash. The reason for the name is uncertain: it may refer to the tree's dark brown heartwood, or it may refer to the appearance of the leaves, in contrast to those of the white ash early 19th century; earliest use found in The Repertory of Arts. From black + ash. Definition of black ash in US English: black ash nounˌblak ˈaʃ North American A North American ash, Fraxinus nigra (formerly called F. sambucifolia), found in wetlands in the north-eastern United States and eastern Canada; (also) the timber of this tree, which can be separated into flexible strips by pounding and is used in basket-making and cooperage. nounˌblak ˈaʃ Chemistry historical In the manufacture of sodium carbonate by the Leblanc process: a mixture of sodium carbonate and calcium sulphide formed at an intermediate stage, which is washed (lixiviated) with water to obtain the pure carbonate. Origin Late 17th century. From black + ash. The reason for the name is uncertain: it may refer to the tree's dark brown heartwood, or it may refer to the appearance of the leaves, in contrast to those of the white ash<br>early 19th century; earliest use found in The Repertory of Arts. From black + ash.
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