Plural of amphitrichum, referring to organisms or structures with hair-like appendages or flagella at both ends.
From Greek 'amphi-' (on both ends) and 'trichum' (hair), literally describing structures with hair-like features at opposite poles.
Some bacteria are amphitrichous—they have flagella (whip-like tails) at both ends, letting them move forward or backward with equal ease through their microscopic world.
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