An extremely obscure or archaic term with unclear modern usage, possibly relating to amphibious organisms or a variant scientific name no longer in use.
Possibly from Latin/Greek 'amphi-' (both) + a second element of uncertain origin. This appears to be a very old or nonce term.
This word is so rare that it barely appears in any modern dictionary—it's a remnant of early scientific naming when Latin and Greek were freely mixed in unpredictable ways!
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