Definitions
There is 1 meaning of the phrase
Limulus Polyphemus.
Limulus Polyphemus - as a noun
Large marine arthropod of the atlantic coast of north america having a domed carapace that is shaped like a horseshoe and a stiff pointed tail; a living fossil related to the wood louse
Synonyms (Exact Relations)
horseshoe crabking crabxiphosurus polyphemus