Relating to, characteristic of, or resembling didelphids or members of the marsupial family Didelphidae.
From 'didelph' plus the suffix '-ic,' which forms adjectives meaning 'of or relating to.' The '-ic' suffix is extremely productive in English scientific terminology.
The suffix '-ic' is one of English's most prolific tools for creating adjectives—'atomic,' 'dramatic,' 'scientific'—and applying it to scientific terms creates a scholarly register that immediately signals specialized knowledge!
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