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Words, grammatical forms and meanings linked to the ontology.

delta metal en · NOUN

Etymology

The three metals are symbolised by the triangular (delta) shape.

Meanings

  1. (uncountable) A brass alloy consisting of copper (55%), zinc (41-43%) and iron (1-3%), with the balance consisting of various other metals. The proportions used make the material harder and suitable for valves and bearings.