English

Noun

abyssal rock ‎(plural abyssal rocks)

1. (geology) An igneous rock that crystallized at considerable depth in the crust; plutonic rock.

Translations

References

• Philip Babcock Gove (editor), Webster's Third International Dictionary of the English Language, Unabridged (G. & C. Merriam Co., 1976 [1909], ISBN 0-87779-101-5), page 9