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n. Any organic compound derived from acetylene or a terminal acetylene by replacing a hydrogen atom with a metal.

n. A compound formed by the replacement of one or both of the hydrogen atoms of acetylene by a metal.

"Freund and Mai have also observed that when copper acetylide which has been dried in contact with air for four or five hours at a temperature of 50° or 60° C. is allowed to explode in the presence of a current of acetylene, an explosion accompanied by light takes place; but it is always local and is not communicated to the gas, whether the latter is crude or pure."

monosodium acetylide