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Draco (lawgiver) (from Greek: Î´ÏÎ¬ÎºÏÎ½), the first lawgiver of ancient Athens, Greece, from whom the term draconian is derived. Draco (physician) (from Greek: Î´ÏÎ¬ÎºÏÎ½), the name of several physicians in the family of Hippocrates. Draco Rosa, a Puerto Rican songwriter and former member of Puerto Rican boy band Menudo.
Definition of PLACODERMI. : a class of extinct fishes with an armor of large bony plates and primitive jaw structures that has been taken as equivalent to Antiarcha plus Arthrodira but is now usually extended to include also the Acanthodii, Cycliae, and minor groups â compare chondrichthyes.â placÂ·oÂ·derÂ·moid adjective.ADVERTISEMENT.rigin of PLACODERMI. New Latin, from plac- + Greek derma skin â more at derm-. This word doesn't usually appear in our free dictionary, but the definition from our premium Unabridged Dictionary is offered here on a limited basis. Note that some information is displayed differently in the Unabridged.