That is made half of a metal and half of some other material(adjective)
Of or relating to a half-metal(adjective)
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Use "half-metallic" in a sentence
"Out of Australia, Shaun Tan and Andrew Ruhemann's "The Lost Thing" narrated by the brilliant satirical pianist Tim Minchin is a warm and quirky tale of a boy of his attachment to a half-octopus-like, half-metallic creature looking for a place to belong."