Describing bacteria that grow rapidly and robustly in culture, producing abundant colonies on growth media.
From Greek 'eu-' (well, good) + 'gonos' (generation, growth). Coined in microbiology to distinguish vigorous-growing bacteria from slow-growing variants.
Eugonic bacteria are the overachievers of the microbial world—they colonize so quickly that they're usually the 'weeds' that outcompete slower species, which is why antibiotic-resistant bacteria often start out eugonic before the antibiotics slow them down.
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