Medical Dictionary
blue–ringed octopus
noun \-ˈriŋd-ˈäk-tə-pəs, -ˌpu̇s\
Medical Definition of BLUE-RINGED OCTOPUS
: a venomous octopus (Hapalochlaena maculosa synonym Octopus maculosa) of the Indo-Pacific region that is especially common along the southern coast of Australia, is capable of inflicting a fatal bite due to the injection of tetrodotoxin, and undergoes skin color changes when aroused displaying brilliant blue rings
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